But typically, Justice Department internal opinions — though they have no binding legal weight in court — are controlling on subsequent administrations unless they’re revoked or superseded by new opinions.

If the House continues with an inquiry, and subpoenas people and records, the White House response will be that their inquiry per legal opinion is invalid and also to pound sand.

Trump wanted to force Pelosi to take a vote and had the DOJ write this opinion. You know what Pelosi did? She took a vote.