By Marc A. Thiessen President Biden wants credit for nominating the first Black woman to the Supreme Court. But here is the shameful irony: As a senator, Biden warned President George W. Bush that if he nominated the first Black woman to serve on the Supreme Court, he would filibuster and kill her nomination. The story begins in 2003, when Bush nominated Judge Janice Rogers Brown to serve on the U.S. Court of Appeals for the District of Columbia Circuit. The D.C. Circuit is considered the country’s second-most important court,…