Done, and done again.
Also a bunch of stuff that arguably isn't/wasn't 'ours'--including the land comprising the US and Canada, all of which was taken by force and/or guile. Well, as I said, it's 'done'--history now, and no more.
But adjurations to America to 'take what's ours' are--breathtaking.
And, IMO, the only thing that's likely to render America 'too weak' is the contempt of, and disregard for, physical reality and the science that describes it most accurately, which is displayed and promoted by certain America ideological groups and corporate interests.