"If this move works, they should next revisit the declaration of war against Mexico, maybe rescind that and apologize to Mexico for invading them." Haven't they already done that? Mexifornia, complete with free education, welfare, and medical care is a reparation gift isn't it? All that's missing is Nazi Pelotski standing at a podium and handing an official letter of apology over to the president of Mexico.
Probably they have already apologized to Mexico, or tried to. Clinton went to Uganda to apologize for slavery, although it is not likely that any Ugandans ended up as slaves in the United States. I don't know if we have apologized to Canada for the burning of York during the War of 1812, or to Japan for invading Okinawa, or to Spain for declaring war in 1898...but give them time. America is guilty of everything and must apologize for everything.
The sack of Rome? America's fault.