My take is a little different, @Nonilex
#DonaldTrump knew EXACTLY what the historical significance of the term "#AmericaFirst" was the moment he started saying it, knowing FULL WELL the #AmericaFirstCommittee was the name of the #RightWing #isolationist movement. He is one of those that happen to be more than just a little bit taken w/ that #strongman fella from Germany.
Donald #Trump had no idea about the #historical significance of the term "#AmericaFirst" when he first started saying it, believing erroneously that he'd thought up the slogan himself even though he'd no doubt heard it somewhere during his 77 yrs. Before the US entered the war the #AmericaFirstCommittee was the name of the #RightWing #isolationist movement & many of its members also happened to be just a little bit taken w/that #strongman fella from Germany.
joe•iuculano 
Nonilex