Story highlights A.B. Culvahouse will vet VP candidates for Donald Trump

Culvahouse and Trump met earlier Wednesday, according to a source

Washington (CNN) A.B. Culvahouse, a Washington attorney who vetted possible vice presidents to John McCain in 2008, will do the same for Donald Trump in 2016.

Culvahouse and Trump met earlier Wednesday, according to a source familiar with the meeting, and he has accepted a role to help investigate and choose potential running mates. Culvahouse is currently a partner at O'Melveny and Myers, and is also a former White House counsel.

Trump will also require his vice presidential prospects to submit their tax returns, which is standard in any search, according to a Trump adviser. Trump has not yet released his own returns, but has said he will do so when he is no longer under audit.

Culvahouse has taken considerable criticism for the 2008 process, which recommended that McCain choose then-Alaska Gov. Sarah Palin, who initially wilted under intense media scrutiny after her selection. He has defended his decision.