Former President Donald Trump has resorted to every idea in the book to try to slow down or throw out the Manhattan hush money trial — most recently, a claim of presidential immunity, despite the fact that virtually all the alleged conduct occurred before he was even president. Ultimately he was smacked down by Judge Juan Merchan for not making the motion in a timely fashion. The former president needs to be careful at this point, wrote legal experts Norm Eisen and Taylor Redd for MSNBC on Thursday — his tactics, which reek of “desperation,” could make an enemy of the judge, and end his defens…