Rep. Elise Stefanik was informed this week by Republican House Intelligence Committee staffers of a new diktat from Chairman Adam Schiff. It made the New York Republican’s jaw drop.

Democrats had informed Republicans that, from here on out, the committee would produce a single, printed transcript of every interview it conducted as part of its impeachment inquiry. Only members of the three committees involved in the purported inquiry would be allowed to view that printout, and only in the presence of a Democratic staffer. Ms. Stefanik—an elected member of Congress who sits on the Intelligence Committee—will be babysat while reading by an unelected employee of the Democrats.

“It’s outrageous, and it’s an abuse of power,” Ms. Stefanik said in an interview. “Every constituent across this country deserves to have their members have access to all the facts.”

Welcome to impeachment, Schiff-style. Democrats keep their witnesses locked behind secure doors, then flood the press with carefully sculpted leaks and accusations, driving the Trump-corruption narrative. And so the party goes, galloping toward an impeachment vote that would overturn the will of the American voters—on a case built in secret.

Conservative commentators keep noting that Mrs. Pelosi’s refusal to hold a vote on the House floor to authorize an official impeachment inquiry helps her caucus’s vulnerable members evade accountability. But there’s a more practical and uglier reason for Democrats to skip the formalities. Normally an authorization vote would be followed by official rules on how the inquiry would proceed. Under today’s process, Mr. Schiff gets to make up the rules as he goes along. Behold the Lord High Impeacher.