Why? Trump says he 'gave nothing away' at a very good meeting. The intel people are just doing their jobs. If they were going to make up damaging information about Trump they could do that without all the legwork, and Putin could discredit them by releasing his records of the meeting anyway.
So the only reason any Trump supporter would find a problem with this is if they belive Trump is a traitor and revealing the contents of his meeting will incriminate him.
Is that why Democrats had a problem with Ken Starr’s ridiculous investigations? Because they thought Bill Clinton was a traitor?