mar 1, 1809 - Signs Non-intercourse Act (2 Stat 528) forbidding entry to US ports by “public vessels” of Great Britain and France after 03/01/1809, or for US citizens to provide supplies to such ships; after 05/20/1809 all vessels from Great Britain or France are interdicted; imports from those countries forbidden. President is authorized to reverse this law and restore trade if France or Great Britain revoke or modify their edicts. Non-Importation Act of 04/18/1806 is repealed