Yesterday Rep. Ron Paul (R-Texas) introduced a bill (H.R. 3785) in the House of Representatives to repeal Section 1021 of the recently signed National Defense Authorization Act (NDAA) in order to prevent the indefinite detention of Americans without due process (video of Paul's speech on this below).
President Obama signed the NDAA into law on New Year's Eve. A couple weeks earlier Rep. Justin Amash (R-Mich.) had published an excellent analysis of how the new NDAA law "gave the President sweeping new power to detain American citizens indefinitely, without charge or trial."
Read "Congress Must Fix the Indefinite Detention Provision of the NDAA Law" for information about two other bills that have been introduced in Congress to prevent the indefinite detention of Americans.
Contact your Representative and Senators in support of Ron Paul's new bill and the two others mentioned above.