You are using an out of date browser. It may not display this or other websites correctly. You should upgrade or use an alternative browser.
alternatehistory.com
There had been threads where if it is possible for America to reach 1 billion. But I am just gonna go overboard and see if America can reach 2 billion people! Muahahaha.
Rules-
-You can expand America's size anyway to increase the population
-You can abolish any immigration laws preventing people to enter the US
-Must somehow be possible
-You can have mega-cities similar to Mega-City-One (I don't know if this will help someway)
-If it is possible, make America self-sufficient in manufacturing goods internally to provide itself goods/services, agriculturally provide itself food, provide itself all the water the population needs, etc...
-You can go to the future if possible for America to reach 2 billion but do not pass 2050.