Please pester the State Department: 202-647-4000 or 1-800-877-8339
and the White House: 202-456-1111
asking for
1. A cut off of all US aid (as required by US law) until Zelaya is safely returned to office.
2. Financial sanctions against the coup plotters.

From Democracy Now! today:
US Suspends Military Cooperation with Honduras

The Pentagon has suspended military cooperation with Honduras in response to the overthrow of the democratically elected President Manuel Zelaya. It’s the first major punitive action taken by the US since Zelaya was ousted last Sunday. The Obama administration has refused to legally classify Zelaya’s ouster as a coup, which would automatically trigger a suspension of aid. Meanwhile, as public outcry continues throughout Honduras, an overnight curfew has been toughened to allow the twenty-four-hour jailing of protesters without charge.