Tens of thousands of people have marched from the White House to Capitol Hill in Washington to protest against Barack Obama's healthcare reforms.

华盛顿成千上万人在白宫与国会山之间游行抗议奥巴马的医疗改革。

Mr Obama said he will not allow special interests to dominate the debate

The demonstrations¹ came as the US president sought to boost support for his plans during a Minneapolis rally.

Addressing a crowd of 15,000, Mr Obama said he refused to accept no change on his top domestic priority.

He said he would not allow special interests to "use the same old tactics（策略，战术） to keep things the way they are".

"I will not accept the status quo（现状）. Not this time. Not now," Mr Obama said in the democratic-leaning state, which has one of the country's smallest numbers of uninsured residents.

'Taxed to death'

But in Washington protesters attacked Mr Obama's administration for what it called out-of-control spending - on healthcare, the stimulus² packages and the bailout of the banking³ and car industries.

Healthcare in the US costs $2.2tn a year, or 16% of the country's GDP - nearly double the OECD average.

The protestors insist that spending tax dollars on a government-run health insurance option will increase inflation（通货膨胀） and lead the country to economic ruin.

"Born free, taxed to death," one protester's sign read while another, held up by an immigrant from Ukraine, said: "I had enough of socialism in the USSR."

The march - co-ordinated by the conservative grouping Freedomworks, a grassroots movement calling for lower taxes and smaller government - brought together protesters from across different states.

'Door open'

Days after urging Democrats⁴ and Republicans in Congress to work together, Mr Obama said his plan was open to ideas from across the political spectrum（光谱，范围）.

"If you come to me with a serious set of proposals, I will be there to listen. My door is always open," he said.

He warned, though, that he would not waste time with those who believe: "it's better politics to kill this plan than improve it".

It is estimated that some 46 million Americans do not have health insurance, and a further 25 million are thought to have inadequate⁵ insurance.

The healthcare plans currently being considered in Congress are all attempting to expand coverage⁶, while also reforming the system to prevent spiralling（螺旋运动） costs.

The bill would expand coverage to 97% of Americans, at a cost of some $600bn (£365bn).