WASHINGTON (AFP/Reuters) - US President Barack Obamas plan to close the Guantanamo Bay prison by early 2010 drew a crushing Senate rejection on Wednesday, as well as a tough FBI warning against moving detainees to US soil. The Senate denied Obama the $80 million he sought to close the prison. The White Houses Democratic allies joined Republican critics in a lopsided 90-6 vote to forbid transferring to the US any of the 240 detainees at the facility, a global symbol of US war on terrorism excesses. The Senate voted to strip the prison money from a $91.3 billion bill to fund the wars in Afghanistan and Iraq. It also barred the Obama administration from using any funds to bring the detainees held there to US soil through Sept 30. Bucking Obama, his fellow Democrats who control the Senate decided to dump the money after intense Republican criticism. That could make it potentially more difficult for the president to fulfil his promise to close the prison on the U.S. naval base in Cuba by January 2010. The Obama administration should have focused on a plan for these terrorists first. Once it has one, well consider closing Guantanamo, but not a second sooner, said Republican Senate Minority Leader Mitch McConnell. FBI Director Robert Mueller dealt another blow to Obamas goal of shutting the prison by a self-imposed January 22, 2010 deadline, rejecting Democratic assertions that maximum-security US prisons can safely hold accused terrorists. The concerns we have about individuals who may support terrorism being in the United States run from concerns about providing financing to terrorists, radicalising others, Mueller told a hearing of the House Judiciary Committee. The threat of Gitmo detainees radicalising others would apply even if they were held in maximum-security prisons on the US mainland, the head of the Federal Bureau of Investigation indicated. Muellers comments echoed Republican complaints and were bound to fuel what polls suggest is deep resistance from the US public to moving the detainees to the United States - a major hurdle to closing the prison. The White House has promised Obama will reveal details of his plans for the detainees in a speech Thursday on national security, while the Pentagon has said lawmakers were making it exceedingly difficult to meet his deadline. Obama had sought $80m to close Guantanamo Bay as part of a vast emergency spending request to fund the wars in Iraq and Afghanistan - but the House left the money out even before the Senate voted to remove it. The overall legislation was expected to clear the US Congress this week. A handful of Democrats voted against blocking the detainees transfer, an issue that galvanised Republicans who had been reeling from their successive election losses in 2006 and 2008. Republicans made not a whimper or a peep when they held the White House and president George W Bush released Guantanamo Bay detainees who went on to attack US forces, charged Senator Dick Durbin, the number two Senate Democrat. Now that President Obama has said the days at Guantanamo are numbered, theyre coming in asking for detailed accounting of every single detainee, he said. Its clearly a double standard. Some Republicans said they favoured closing the prison, a global symbol of US war on terrorism excesses, while warning that some of the suspected high-ranking Al-Qaeda terrorists held there may never face trial or be freed. Some of these people, literally, are going to die in jail, and thats okay with me, said Republican Senator Lindsey Graham, a member of the Senate Armed Services Committee. I will not shed a tear. But Graham said he backed Obamas plan to resume military trials for the prisoners and underlined that eventually closing the prison would help the United States prevail in the war on terrorism. Another amendment would mandate frequent, detailed reports on the risks posed by releasing or transferring any detainee and an accounting of how many of those freed to date have taken up arms against US forces.