I suspect that the attempt to get both the full text of the Muller report, and the tax returns, would require an actual use of police force at the White Hosue, something that I do not think will actually happen. The ability of the Trump white house to stand brazenly and simply ignore the law when it feels like it seems pretty strong.

Timing: tax returns
TurboTax and H&R Block are sued for allegedly keeping Americans from filing taxes for free

As City Atty. Mike Feuer alleges in lawsuits filed Monday against Intuit and H&R Block, the two companies have connived [!] for years to discourage millions of taxpayers from taking advantage of a free, simple online system provided by the Internal Revenue Service

"co-conniver" tricky Dick Neal RICOCHETS off the 8-ball into the DNC side-pocket

The commercial tax-prep firms and the conservative [!] anti-tax lobby share incentives to keep tax filing complicated for most Americans...They've both opposed allowing the IRS to prepare taxpayers' returns for them by sending forms pre-filled with all the information the IRS already has about them. [...] Obama mentioned such a plan during his first presidential campaign, but it died [!] under lobbying assault from the tax-prep companies and anti-tax crusaders.

18 states have bills to make presidential candidates release tax returns.
(representatives of the odious? not yet.)

Diversity is the key to economic and political evolution.