GOP's secret Trumpcare bill will impact a sixth of the U.S. economy. What could possibly go wrong?

Senate Majority Leader Mitch McConnell (R-Ky.) is pushing for a vote next week on a bill to repeal and replace Obamacare despite having held no public hearings, obtained no feedback from budget analysts and taken no testimony from doctors, patients or hospitals.

That’s a recipe for disaster.

Senate...