I can just see the world's response if the US bombed/jammed RTLM, engineered a coup with the CIA, dropped the 101st, or sent in the Marines. We'd hear nothing but same old complaints about US unilateralism, US adventurism, US incomprehension, and all the rest. What's more, the same people bitching about the US not acting in 2009 would have been the same people bitching in 1994 if the US did act.
That is because explanations the US could give for such an intervention, stopping a genocide, simply wouldn't have been believed by the common herd of knee-jerking Ameriphobes even if the Marines caught the Hutus redhanded and stirring their cooking pots with bloody machetes. Clinton explaining that the CIA had intelligence pointing to a future genocide would have been laughed at by the same world that discounts any and all US statements that don't mesh with their Evil America fantasies.
This question is nothing but a hand-wringing exercise in hindsight. In 2009 we know the genocide occurred. At the time no one knew nothing of the sort would occur, with no real certain anyway, and, when indications finally jelled that the killings were going to begin, the scant hours left weren't enough time to do anything.
I'm continually amazed at the blithe assumption that the US could somehow magically and immediately deploy radio jammers, launch cruise missiles or bombers, send in 5000 marines, and engineer coups in what is rather a remote region of central Africa.
It's also rather sad when the same people who routinely bitch at the US are also the first ones to assume that only the US can intervene. Given the forces she already has in central Africa, France was in a far better position to rapidly put boots on the ground in Rwanda, but you never see threads and news stories asking about why France never intervened.
It's always America's fault and America's failure.
Bill