First, a bit of background:
ACTA, the "Anti-Counterfeiting Trade Agreement", has been called the international version of SOPA/PIPA/PCIPA. In fact, ACTA is the reason & inspiration for the others.
While claiming it's about clamping down on "counterfeit goods", ACTA is really about censoring the Internet WORLDWIDE to maintain the monopoly of the international copyright mafia — in addition to permanently delaying the release of generic pharmaceuticals to medical patients who need them & permanently ending international trade in such generics. (Detailed explanation here & current updates here.)
It gets worse: President Obama already signed it.
However, as Senator Ron Wyden stated in a letter to the President, this seems to set up a potential constitutional crisis: International treaties, such as trade agreements, are supposed to be presented to the Senate for ratification — not signed by the President behind closed doors with no public input. (The Obama Administration's trade representative has claimed that it's merely an "executive agreement" — but this belies not only the fact that U.S. trade policy is the purview of Congress, not the President, but that all other signatories explicitly call it a trade treaty.)
With this in mind, a whitehouse.org petition has been started to request that President Obama observe constitutional procedure for ratifying an international trade treaty & offer ACTA to the Senate for a proper discussion.
Follow the above link to sign the petition.
(Also, Daily Kos, if it hasn't already, needs to organize its own political drives to contact the President — or whoever can do something about this — as well.)
FIGHT INTERNET CENSORSHIP. THIS IS YOUR ONE CHANCE.