yes
and yes (maybe apply for it? not sure on canada's dealo)
see my sister was born in the states as my madre and parde were in the states at the time
(madres is americana) while i was born in RSA so i had to apply for US citizenship (i have a f'd up SS#)
u knocked your ole lady and want an american kid? u can marry mexican women and make then a citizen too.... i think sorearms did that