Obama tells Senate not to 'jam' through healthcare plan
The defeat has come on Mr Obama's first anniversary in office
US President Barack Obama has warned Democrats not to "jam" healthcare reforms through the Senate after a Republican won a seat in Massachusetts.
Mr Obama told ABC News any vote should wait until Scott Brown had taken up his seat, and lawmakers should seek to "coalesce" around parts they agreed on.
Mr Brown will be Massachusetts' first Republican senator since 1972.
His victory means the Republicans now have enough votes in the Senate to block the Democrats' healthcare plans.
The BBC's Paul Adams, in Boston, says it is a humiliating defeat for the Democrats, entailing the loss of their filibuster-proof 60-40 supermajority, and a deeply unwelcome anniversary present for President Obama exactly one year after his inauguration.
I never said I was going to do everything I can to stop healthcare
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