Republican Delegate Bob Marshall says it's his duty to try and pursue impeachment proceedings against Attorney General Mark Herring.
A handful of African-American ministers joined Marshall to denounce Herring's decision to back two same-sex couples challenging a constitutional provision barring gay marriage in Virginia.
The ministers accuse Herring of misleading them about his views on gay marriage when he was a candidate for office.
A spokesman for Herring called Marshall's news conference a "desperate ploy.''
Marshall is the General Assembly's most outspoken social conservative. He wants a House of Delegates committee to investigate whether Herring should be impeached for violating his oath of office. House Republicans leaders have said they do not support Marshall's effort.