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 think they need more practice to eliminate us
You and Cruz are asking things from Mr. Trump, not even you wud touch, it involves a lot more people. These people are dirty tactic people, not just Rubio, or snooze, it comes from every , I mean every media, every corporate office. It don’t matter what Trump does, or don’t do. True or false, doesn’t matter. They, the Rhino,s, know, if We can plant doubt in people’s mind, they don’t care if any of it is true. WE TRUE AMERICIANS WILL SEND OUR ANSWER TO YOU RHINO POLITICIANS? YOU CAN READ IT TUESDAY NIGHT? NO MORE SAID?
Tell me more of his MORALITY , Mr. Foam Party Jockstrap Man !!! GTFOH
The more he talks, the less I like him.
AMNESTY boy has ZERO chances to be President,,,,,,
He says immoral how about talking about Trumps penis.
Bla Bla Bla , pathetic politicians , make me sick , that’s why I am voting for Trump.
No it’s not.
It’s wrong and immoral to threaten every non believer of Islam too !
Shut up$#%&!@*