Dean
That is an argument for why its in the US's long term interests for obtaining New Orleans, by some means or another. [Presuming you think continued continental expansion is a good thing.] Its NOT an argument for them being able to do it in the event of no renewal of the war with Britain. Your talking about driving from very good defensive positions the most powerful military state in the world. True, even with peace in Europe it can not send more than relatively small forces to the Americas but relatively small in Napoleonic French terms is probably enough to storm through the US let alone hold a major river against the small forces that the US could send that far west. As you say yourself New Orleans is the key and how the hell are the US going to take that without logistical support, in the face of French military and naval superiority?
One: It is an argument. Every country with an ounce of sense uses its means to further its interests.
Two: New Orleans isn't that good of a defensive position, was very small, and had few people present. It isn't a fortress city, merely a strategic city. One has a tactical advantage; the other not so much. If anything is going to be defended, it would be the profitable Caribbean colonies that are also in reach of the US.
Three: Should Napoleon even try to mount a campaign in America, he would be making several mistakes on a strategic level.
-He would be turning his attention from Europe, the only thing he really cares about (as history has shown), and towards something he doesn't even control. He will have stretched supply lines with no real base, be vulnerable to British naval superiority, have poor lines of communications, and basically face all the problems Britain faced in the American Revolution tenfold.
-He would quckly make a US-Britain alliance faster than anything else. Britain won't want any threat to Canada, which is what a Napoleonic army in America would be. Having the US gain New Orleans is a win-win for Britain, as running interferance would both all but insure the US success and weaken Napoleon (who the British don't care to appease). That's one less potential trading partner for Napoleon when the war with Britain comes, and one more ally for Britain.
-Napoleonic tactics of big even lines don't work well in North America, because much of the east is wooded, hilly, and near impossible to arange big formations on. And when you consider what the US did to british formations marching through woods in the Revolution, Napoleonic tactics will soon meet "unsporting" and "cowardly" american woodsman tactics. Unless, of couse, Napoleon is going to be foolish enough to only be defensive around New Orleans, in which case he can't hit anything importnat.
-At the time, the US had one of the biggest merchant marines of the world. It was only broken over Jefferson's stupid Embargo Act and the abuses of by Napoleon and the British. A war would mean no Embargo Act, no British seizures (good relations/alliance and all that), and the makings of a significant US navy to fight the French supply lines. And since Britain wouldn't be sad to see Napoleon bloodied, "volunteers" and assistance via Canada are perfectly likely.
he seized power by pretty much a coup. After that his 1st series of wars as emperor were pretty successful. It was only from about 1807 that the empire really started struggling under the strain of the constant wars and the resistance his actions were building up. However we were talking about if France doesn't sell and war with Britain doesn't resume. Could be that having restored France as the dominant power in Europe he has the sense to be satisfied. Or that another general is the one who takes over. [Nearly was another one]. Or he dies or something ~1801 and someone else takes over. Plenty of ways what we're discussing can come about. What I don't see is how the US can conquer the region under those circumstances.
This just goes to support my point that Napoleon was Europe-focused, and thus unlikely to do much over in America. And successor's would fase the same issues I pointed out above.
At this period of time France had become the seat of a power larger and more formidable than any empire in western Europe since Charlemagne. They had annexed or as protectorates modern Netherlands, Belgium, most of the German Rhineland, Switzerland and much of northern Italy. They had various allies and friendly states while opposition to the east was split between Austria, Prussia and Russia, the former two as hostile to each other as France. Although pretty dictatorial Napoleon brought much needed peace and stability to France and kept many of the reforms of the revolutionary period that freed up much capability. Britain was still deeply mistrustful but the Whigs, long out of power, were still hoping for pace and Britain was tired of a long war that had so far been fairly unsuccessful.
Once again, suggests that Napoleon is Europe focused. He has no benefit to a distraction in New Orleans. And just because Britain wants peace doesn't mean that it will give France a free hand. The US and USSR wanted peace with eachother, but supported client states and allies opposed to the other. Afghanistan, Vietnam, Cuba, South Korea, the list goes on.
There is the problem that the army and to a degree the state had gotten reliant on loot. However much could have been eased by disbanding much of it and/or finding new occupations, such as guarding and developing the western territories. France spent an immense amount of the latter wars and drained the country dry, both in funds and blood by the end.
Come now, how long would it hold together without a military tradition/victories? If France doesn't have future victories to offer its clients, then pretty soon those people aren't going to stick around. Nations/groups held together by military might need war to stay whole.
Historically Napoleon did try and go for total victory as you suggested. However every war generated further hostility to French domination and their behaviour. Each one caused more and more resistance and after Britain resumed the conflict it hounded France with increasing success and denied it access to the resources beyond Europe.
We know, through historical documents, that the US was going to seize it if it wasn't sold. We know, though history, Napoleon was only interested in Europe. If anything, it only suggests that even if he did decide to pursue a costly war with the US over uncontroled territory that wasn't worth the price paid, he'd quickly get side tracked by events in Europe, be unable to spare the resources for anything in America, and get handed a defeat by the US or else face the cost in gold, resources, and manpower of defending something so far away. This would cause France troubles sooner rather than later.
Also, consider if Napoleon had been a successful megalomaniac and taken over most of Europe including Britain, say by 1815.
Better suited for another topic, since this is about New Orleans. With no other POD, Napoleon will still get beaten. Sooner, if he wastes resources on a backwater no one lives in. If he goes to war with the US, Sam Fulton won't be offering the steam boat. Without the steam boat, invasion of Britain is near ASB. In fact, the conquest of most of Europe is near ASB. Especially since a Britain-aligned US would pick up some of the slack for losing European trading partners.
As well as reclaiming Canada don't you think he would have reopened the question of Louisiana?
Not really. Even after losing the wars, France still got to keep a significant empire. Britain would be no exception. Quebec may be free/recolonized, but there are many more areas (ie India) that are worth the efforts to claim, and Canada isn't really one. Especially since Britain may immitate France and "give" Canada to the US, on secret treaty to keep it away from a potential negotiating table.
Even assuming he does ASB manage to win, Napoleon's first interest is to gain control over his new gains, keep others from aligning against him, and otherwise not waste energy in unproductive fields. Demanding a city that was quickly swamped by another nationality over 10 years ago would be pretty low on the list.
If you're going to have France even have a hope of keeping New Orleans, you'll need a POD so far back that the setting of this tread is no longer an issue. Otherwise, it's in Napoleon's best interest to get rid of baggage for cash and to focus on the real prize. People who try and get greedy (like he did) end up biting more than they can chew. This is the same case for the dispute over New Orleans. It's worth less than nothing now, will be worth less than nothing for untold decades even it is held, and he's planning for a big fight. Why bother with swampland and mountain men?