Wonder how many Americans believe his crap ?
It depends on the meaning of "Americans." If it means people who are merely present here, Obama's wholesale importation of outsiders is adulterating the term. If it means people with a history here and allegiance to the country, the answer is "few that are not feeble of mind."
Unfortunately, political foolishness is only loosely correlated with IQ--that's why somebody like Sanders or Hillary can be serious candidates for the Presidency.
Actually, many of us were required to learn this in school.
https://en.m.wikipedia.org/wiki/Marines%27_Hymn
Read the dates: over 100 years before the first mosque.
“Wonder how many Americans believe his crap ?”
Twice elected ...
Now Bernie Sanders ...
Way too many.