Or request their recusal.
They are both fact witnesses who might well have been asked to testify if Trump had not asserted complete immunity from such requests.
Just a wild idea, but it would make the point that the circle of defenders of the president includes a lot of co-conspirators. Mitch plays hardball, and his caucus is supinely complicit. Is there any reason not to be politely hard-nosed?
If your opponent sends guilty propagandists as his legal team, impeaching their credibility is justice. Of course, there is the risk that they might be allowed to replace them with some better lawyers. But the performance so far isn’t likely to have made serving as Trump’s defender any more attractive than it was when they resorted to the motley crew they have now.