Tell me when and how he did that, along with evidence of same.
Rubio immediately changed his rock solid stance after being sworn into office and teaming up with Chuck Schumer, of all people!
Ive yet to find that video but just for starters, read Marko’s various positions in 2010: http://www.politifact.com/florida/statements/2010/may/12/marco-rubio/marco-rubios-position-arizona-immigration-law/