The filibuster makes this basically impossible to do without some degree of Republican support. Overturning the filibuster is problematic because Democrats eith

The filibuster makes this basically impossible to do without some degree of Republican support. Overturning the filibuster is problematic because Democrats either haven't had the votes to do so or it would have required the votes of moderates who want to use it for cover. The senate is so constructed that the senators voting can represent 2/3 of the population and not even have 50% of the votes in the senate. In the last 24 years the Democrats have had more than a bare majority in both house and senate while holding the presidency exactly 2 years between 2009–2011. The backlash for daring to do anything at all lost them both and they haven't had this since.