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:

My gun range, my rules!
Inviting terrorists to gun ranges!The dumbest$#%&!@*I’ve ever heard!
He is an idiot that’s why he needs to drop out period..
Nothing wrong with banning murderers & conquerors from coming in to our country!
not if we use them for target practice!!!!
No it`s not, they will want to use it as a training camp.
What an$#%&!@* It is your business and you can protect it and the community as you see fit…
thats the last place the cowards want to go so i subject is moot.
SEE…. that blow hard has got to go !
Invite them to your home Rubio if you trust them so much!