They will reject any deal because they desperately need an issue to run on in the fall. They don’t have ANYTHING and they voted against the Trump economic revival. They need 10 months of crying families being deported for campaign ads. They don’t really care if the DACA dupes are helped or not, it is about helping the democrats.
Complaining about deporting illegals and their illegal families is a bad thing to run on for the democrats. since that is a winning issue for Trump. Trump won because that is what he said he would do.