A woman holds up a sign as members of Congress and representatives of women’s groups hold a rally to mark the 40th anniversary of congressional passage of the Equal Rights Amendment outside the Capitol on March 22, 2012. So far, 37 states have ratified the amendment, and Virginia may soon join them.

A woman holds up a sign as members of Congress and representatives of women’s groups hold a rally to mark the 40th anniversary of congressional passage of the Equal Rights Amendment outside the Capitol on March 22, 2012. So far, 37 states have ratified the amendment, and Virginia may soon join them.