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:

and your dumb$#%&!@*too
…OR BOMBS? TYPICAL IDIOT!!
YOU OUT OF YOU FRIGING HEAD!
No it’s not
What the hell is wrong with him… did he turn democrat
They are not to be trusted in any way. No guns for them. They can go back home and shoot.
you really are some kind of stupid so you want to make sure they are good shots compared to what?
That’s right Rubio let them shoot and kill who they want
Umm let’s back up here a little. 1st off muslims have already been ban from America by public law in 1952, 414 chapter 2 article 212. But that didn’t stop Obama! So why is it immoral banning them from a gun range! That shouldn’t even been in this country!
And . . . IF the American people felt the way you do, your presidential bid would have went farther.