The idea that these people were isolationists was & remains the great lie of the foreign policy debate, basically traceable back to the embittered Wilsonians, who lost the debate--were thoroughly whipped in the debate--over the League of Nations.
When Hitler declared war on America in December, 1941, those on the Left used the fact that we were indeed forced into the war in Europe, to smear Conservatives for having opposed what then seemed to have been inevitable, by the line of attack that your comment implies. As always, "hind sight" is brilliant. That is a complete non-sequitur, however, for whether there can ever be an excuse for an American Government, not to put America first.
America first is the sworn duty of any Federal Office holder; the sworn duty of any new citizen; the sworn duty of each and every person who swears to uphold the Constitution of the United States.
As it turned out, getting ready for war--something Trump urges today, as the best way not to have to fight a war--is to put America first. That, frankly was also the case in the 1920s & 1930s. Consider this speech by the first Senator to openly oppose Wilson's League, ten years later: Reed On The "Voices Of The World".
Agree 100%, presuming you are referring to the America First Committee of 1940-41. Sorry that you misconstrued the meaning of my post.
The point I was trying to make is that Trump may have been better off using some alternate phrase with similar meaning, just to avoid meaningless attacks from the left based on the left's misunderstanding of what the America First Committee really was.