There are two pending federal lawsuits in Michigan that will affect the ability of Congressman John Conyers to appear on the August 5 Democratic primary ballot. The case that had been filed first, Davis v Johnson, has been delayed somewhat. Judge Gershwin Drain, who had been set to handle the case, has recused himself. The case is now transferred to Judge Matthew Leitman, who will hear the case on May 21.
Judge Drain did not say why he recused himself, but presumably it is because he is a friend of Congressman Conyers. Both judges are Obama appointees.