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:

So uh where is whitey implicated here?
Rubio must be living under a rock!!!! He is out of his mine!!!
F**k Muslims
Go ahead and let Muslims on to gun ranges. However I could not guarantee their safety once they enter . Rubio is an idiot for even thinking of allowing this!
Don’t for get lying politicians too!!!
Mr. Rubio it is in our best interest to be cautious, all you to do is look at what is going on in Europe and what has stared here to see why the concern. We know we can not trust you and most others in Government to do what is right. All the hearings you hold and Government officials openly lying to you and the American people and you do nothing, but let a peasant subject do the same and they go to jail. You hate Trump because he is saying what the working peasants are saying and the news gives him the pulpit where as the peasant has no voice. Those who think they are Royalty are afraid he will stir up the working peasants and they will revolt. As well they should. So for at least for now until we know who they are. Or do you think you have a better idea. Like taking or weapons and doubling your armed security.
Annnnd that’s why he’s losing lol
That’s a lie.
We are sick of you politicians so shut the hell up!!! You are nothing but another obummer baby running for president bought and paid for!!!
Douchebag alert