Manhattan DA's office states the obvious.

From ABC, dated March 31 -

Manhattan DA's counsel says House GOP collaborating with Trump

The counsel for Manhattan District Attorney Alvin Bragg on Friday urged House Republicans to denounce former President Donald Trump's attacks on Bragg's office, saying they are collaborating with him to undermine his criminal probe.

"You and many of your colleagues have chosen to collaborate with Mr. Trump's efforts to vilify and denigrate the integrity of elected state prosecutors and trial judges," the attorney for Bragg said in letter to Reps. Jim Jordan, R-Ohio., Bryan Steil, R-Wis., and James Comer, R-Ky. The three are chairmen of House committees probing the DA's investigation into Trump.

I would have used the word "collusion" but that word has already been used with Cheeto.