Apparently you missed the article the ADN put up about the "sixteen years" of trying to pass legislation where both the Democrats AND Republicans used dreamers are bargaining chips for broader/tighter/other legislation.  Let me try and find it for you.
https://www.adn.com/nation-world/2017/09/05/after-16-futile-years-congress-will-try-again-to-legalize-dreamers/
"Democrats had a hand in the legislation's historical futility. For years, they used the DREAM Act as a bargaining chip to push for broader immigration legislation."
I hope I don't need to cite recent attempts at passing the DREAM act under Obama with a Republican led Congress?
I stand by what I wrote.  Politicians on both sides of the aisle have used dreamers as a legislative bargaining chip and now Trump has hypocritically done the same thing.