Paul Clement (left) and John Boehner (right)

The leading law firm of King & Spalding, which came under fire from LGBT rights groups after its defense of the Defense of Marriage Act (DOMA) became public last week, has moved to withdraw from the litigation. The firm cited problems with the vetting process applied to the engagement.

And Paul Clement, the former U.S. Solicitor General and King & Spalding partner who was going to spearhead the DOMA defense, is now a former K&S partner. He resigned from K&S this morning, in response to the firm’s withdrawal decision. Clement will continue his representation of the House of Representatives in DOMA litigation from his new home, Bancroft PLLC, the high-powered D.C. boutique founded by a fellow alum of the Bush Department of Justice, Georgetown law professor Viet Dinh.

UPDATE (12:20 PM): We reached out for comment to Professor Dinh, who said: “Paul wins the biggest cases and Bancroft solves the most complex problems. This is a no brainer. We will continue to do what Paul and I love doing most, which is to serve the best interests of our clients.”

Let’s take a look at King & Spalding’s stated justification for dropping the DOMA representation, and at Paul Clement’s resignation letter….

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David Lat is Managing Editor of Above the Law, a Breaking Media site.