What happens when you investigate the investigators? As we’ve seen with Russiagate, they don’t respond well.

Manhattan District Attorney Alvin Bragg asked a federal judge Tuesday to block a House Judiciary Committee subpoena that seeks information on his office’s investigation into former President Donald Trump.

A lawsuit filed in New York federal court seeks to block a congressional subpoena for testimony from Mark Pomerantz, a former special assistant district attorney who participated in the office’s investigation of Trump and his businesses.

Bragg also asks the judge to preemptively block any further subpoenas for him or his employees from the committee helmed by Ohio Republican Rep. Jim Jordan, in what the filing calls an “unprecedently brazen and unconstitutional attack” on the state investigation.

Pomerantz is actually a former employee, currently back at Paul, Weiss, after vocally resigning from the Manhattan DA’s office.

Mark Pomerantz has written an entire book about his work, People vs. Donald Trump: An Inside Account, and yet somehow can’t be bothered to actually talk about his inside account because it’s too secret.

When you’ve written a book about it, it’s obviously not too secret.

Bragg’s filing claims that the subpoena has “no legitimate legislative purpose”, when Rep. Jordan has already stated that it’s meant to be part of a proceeding determining legislative plans to insulate former presidents from political prosecutions.

That said, even Bragg probably knows that the majority of congressional subpoenas have “no legitimate legislative purpose”. They’re mostly political exercises.

Bragg further claims that going forward “could allow the Committee to seek secret grand jury material, confidential investigative material, and information clearly protected by the attorney-client, work product, deliberative process, law enforcement, informant’s, and public interest privileges.”

Could is very much a hypothetical. The reality is no such information has been requested.

In fact, the “District Attorney sues Mr. Pomerantz to protect the District Attorney’s Office’s interests and privileges and in light of the District Attorney’s Office’s instruction to Mr. Pomerantz not to provide any information or materials relating to his work in the District Attorney’s Office in response to the subpoena.”

The obvious question is what is DA Bragg trying to hide? With such a weak case, the possibilities are endless.

Bragg’s defenders keep claiming that he’s holding some secret cards, most likely he’s just bluffing.