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:

you dumb wet back
Shut up little Rubio
Marco, I think you’ve lost your mind.
Ban ’em from the country
You don’t let the insane onto gun ranges, do you? You don’t let Terrorists onto a gun range to get trigger time so they can kill you better.
Oh ..and let’s get them flight lessons…not the landing..just the take off….let’s see how that works …
Samuel Barnes
Who is Samuel Barnes?
Rubio and Romney are tools
Rubio you are a freakin traitor to America. Shame on you. Why do they need to be on the gun range when it’s so easy for them to just decapitate those that don’t fit in the ideology. Raping children. Disgusting.
Sure. Let them kill us all instead.