Edith Windsor, 83, and her lawyer Roberta Kaplan arrive at the Supreme Court on March 27, 2013 in Washington, DC. (Chip Somodevilla/Getty Images)

For the second day in a row, the Supreme Court is hearing oral arguments related to the legalization of gay marriage -- this time focusing on the 1996 Defense of Marriage Act and whether Congress may withhold federal benefits from legally wed gay couples.

Tuesday’s arguments on California’s Proposition 8 focused on those who want to marry; the DOMA case concerns those who are already married. We'll be providing live updates on the arguments inside and the scene outside the court all morning. For more coverage, read Robert Barnes' story.