As the year draws to a close, it becomes abundantly clear that 2019 had to be an especially difficult one for comedy writers — political comedy writers in particular.That is surely the case for the writers of The Chicago Bar Association’s lawyer-driven social and political satire, the Bar Show, which runs at the Merle Reskin Theatre, from Dec. 5 to 7.With Donald Trump occupying the news 24/7 and being the constant subject of the jokes on all the late night and comedy shows, it has become harder and harder for …