The British health care system isn't perfect, but we would never trade it for the one in the US.

Yet conservative US politicians and greedy insurance companies are pushing lies about the NHS as a way to scare the American public off national health care - risking Obama's whole movement for change and threatening his majority in Congress.

Sign the petition below and tell friends - huge numbers of us will cause a stir in the US media and affect the debate, and Avaaz will deliver our message to wavering US Senators this month before they cast their vote in Congress.