Enter to win every day in CTNOW's 21 Days of Summer Giveaways. Click here to see today's prize.

WEIGHING IN: In his announcement, President Bush said amending the Constitution "is never to be undertaken lightly." He called a ban on same-sex marriages a matter of "national importance."

President Bush walks in to make an announcement in the Roosevelt Room of the White House, Tuesday, Feb 24, 2004, that he will back a constitutional amendment banning gay marriage in an attempt to halt same-sex unions like the thousands that have been allowed this month in San Francisco. AP Photo/Susan Walsh