There are other examples, but I think the Dream Act is the perfect encapsulation of what Democrats face in very narrowly controlling Washington, and why expectations should be tempered if that’s what comes to pass:
1/7

A clean Dream Act (including TPS) might be able to get 60 votes in the Senate, and certainly would pass the House. It's something Democrats and a non-zero number of Republicans have wanted for a long time. 2/7

But much like Trump couldn't take yes for an answer on it, the question is whether Democrats, when they control everything, can resist trying to hitch other wish-list items to the sympathetic DACA population's legalization that could jeopardize its fate. 3/7

Similarly, if it took cutting a deal on border security or similar, would they be willing to compromise to get a few Republicans on board? Or would they hold out, hoping for a bigger majority later? 4/7

On the other side, some of the GOP-ers who have supported or could have supported Dream Act are now out of office (Gardner, Flake, Alexander, Isakson). Some replaced by Democrats, some by more Trump-like Republicans. Others (Rubio, Graham, etc) have moved Trump-ward. 5/7

And cynics on both sides suspect the other of habitually sabotaging Dream when it might pass because they aren't willing to give up the leverage of such a sympathetic group for trickier immigration stuff to get done. Will they still hold that distrust in 2 years? 6/7

Lastly, and this is important: For all the focus on the political machinations, we shouldn't forget this is a popular policy that affects *millions of human beings* in every aspect of their being: Whether they can work, learn, marry, parent and live without constant fear. 7/7