Marco Rubio continually loses his way and forgets that the main stream of American society is feeling alienated and disenfranchised. And it seems that Rubio can be bought and will change, chameleon-like, depending on who he is talking to and what he hopes to benefit from them.
Of course, the biggest mistake he made is with the Gang of Eight and the amnesty program. He made common cause with Democrats who want lots of new Latino voters who will be Democrats for life if they are given amnesty. He did this to unite with big business, which means donors, who want cheap labor. He ignored the fact that millions of illegal immigrants are flooding the country, taking jobs that Americans will do, taking lots of government services, and disrupting societies and standards. There is no attempt to assimilate, only to impose. Rubio later tried to explain after it cost him his credibility, but he was caught lying. His believability has sunk to new lows, and now he has decided to throw in with another group that is not interested in assimilating. He is simply digging a bigger and bigger hole.
Rubio against U.S. citizens again, page 2:

It’s called safety and security stupid
How many is planning on voting for him. Another Obama. Worry about everyone else but Americans.
B******t$#%&!@*them go BACK to your desert an shoot over here y you w I’ll d i e
This jackass is out of his fucking mind!
It’s not your gun range Rubio.
Ban them from guns and pilot lessons !
Its wrong your running for a office you have no experience to run you cant pay your damn credit cards and balance your check book
bull$#%&!@* It is wrong to punish Americans for owning guns and arming the enemy!!
Is he serious?
HES ALL MOUTH ;;NO ACTION ;;; SHRIMPPPPPPPPPPPPPP