Defeated in state after state, gay marriage activists have taken their radical agenda to Washington, D.C., seeking to force same-sex marriage on the entire nation in one fell swoop.

Only one federal law stands in their way. The Defense of Marriage Act (DOMA).

DOMA defines marriage as the union of a husband and wife—throughout federal statutes and regulations, forming a first line of defense against claims that our state marriage laws are unconstitutional.

Last July, a Boston federal judge ruled DOMA unconstitutional. Then, in an extra-constitutional power grab, President Obama instructed the Department of Justice to abandon its appeal, setting himself up as head of not just the Executive Branch, but the Judicial and Legislative as well, falsely claiming DOMA unconstitutional. And now some in Congress have introduced a bill to repeal DOMA outright.

The stakes couldn't be higher. If DOMA falls, every gain from the past 15 years—every state marriage statute, every constitutional amendment, and the votes of more than 30 million Americans—could be for nothing.

That's why NOM launched what may well be our most important initiative yet: Defend DOMA. Thanks to a $1 million matching grant, every dollar donated between now and midnight April 15th will be matched, doubling its impact.

Already, we've sent more than 70,000 petitions to Congress over the past 5 weeks, and raised thousands of dollars to make sure DOMA is protected in Congress and in the courts. But we need your help today. Time is short, and your support today will help protect marriage in America against its biggest threat yet.

Take the DOMA challenge today with your gift of $30, $300, or even $3000 or more if you have the means. Then help spread the word to your family, friends, and co-workers.