umm...because they're the ones that forced the DACA issue instead of letting a consensus spending bill just pass maybe? here's an opinion lead:
(CNN)When is a spending deal not a spending deal? When it's a DACA deal.
It's pretty simple: funding bills should be about appropriations, not immigration. Unfortunately, Democrats let politics take priority over policy, thus paralyzing any compromise, ultimately shutting down the government. ...
If even CNN is capable of letting somebody suggest that, it's worth considering.