After White House press secretary Sarah Huckabee Sanders disdainfully declared on Fox News Sunday that “this” Congress isn’t “smart enough” to understand Donald Trump’s tax returns, Rep. Sean Casten (D-Ill.) had two words: “Try me.”

The challenge was just one of a cascade of snarky responses to Sanders’ demeaning dismissal of House Democrats’ demand for six years of Trump’s returns that the Treasury Department has so far ignored.

Casten’s comment was clear: Give us the tax returns.

Other responses pointed out that members of Congress have managed to wrap their brains around some challenging issues, including writing the tax code — and that many have far greater experience and more advanced college degrees than Trump.