The latest Democrat threat is that they will somehow stop all tax reform until President Trump releases his tax returns. This follows constant media carping during the election demanding that very same thing, only to have the demand rejected by Trump and, by extension, by the electorate.
But wait, you say! Polls consistently show the public wants Trump to release his returns. Sure they do, and it's a classic example of what's called push polling. When a pollster asks a person if he thinks something would be a good idea, that doesn't necessarily mean the person was giving the matter any thought prior to being asked, or that it's particularly important to that person. If you asked 100 people, "Should snails be treated with dignity?" you could probably get at least 75 say yes, even though they had never before given the matter any thought and may never do so again.