Direct link to petition:
https://wwws.whitehouse.gov/petitions/!/petition/require-fre...
It only takes a minute to sign :)
Most political petitions have no impact. They are just email-gathering campaigns. This one is different: it's on the Whitehouse site and it's not for gathering emails, it's to give Open Access advocates some political cover as they craft their proposal.
So if you sign only one online petition this year, make it this one.