Just in from Massachusetts:

A U.S. judge in Boston has ruled that a federal gay marriage ban is unconstitutional because it interferes with the right of a state to define marriage.

U.S. District Judge Joseph Tauro on Thursday ruled in favor of gay couples' rights in two separate challenges to the 1996 Defense of Marriage Act.

The state had argued the law denied benefits such as Medicaid to gay married couples in Massachusetts, where same-sex unions have been legal since 2004.

Tauro agreed, and said the act forces Massachusetts to discriminate against its own citizens.

Evan Wolfson, of Freedom to Marry, adds some context:

Today's ruling affirms what we have long known: federal discrimination enacted under DOMA is unconstitutional. The decision will be appealed and litigation will continue. But what we witnessed in the courtroom cannot be erased: federal marriage discrimination harms committed same-sex couples and their families for no good reason.