Rest in peace Dave Brubeck.
In Mexico, Mexico City currently has full equality, although other parts of the country do not, and Mexico has no DoMA-type legislation. The Supreme Court ruled that marriages performed in Mexico City must be recognized in other parts of the country. While this does not immediately get rid of existing marriage bans, the Supreme Court has given the country a pathway to marriage equality.
In Colombia, equality legislation passed the first of four votes 10-5 in committee. The next step is Senate debate, though no date has been set for that to begin. The Colombian legislature is up against a court-imposed deadline, June 20, 2013. If the legislature does not act by then, "...couples will automatically gain the right to go to any judge or notary public to formalize their union." (Gay Star News). It is sort of win-win, though like here in the states, conservatives are calling for a referendum.
In Uruguay, the lower legislative chamber is set to vote on marriage equality next week. It is expected to pass there and in the Senate (though the Senate vote will not be for some months).
When it comes to marriage equality, Latin America is kicking the States' ass. While this makes us look bad by comparison, I'm definitely happy for the couples in these countries who are moving closer to being seen as the equals of their hetero-counterparts in the eyes of the law.