Senate Democrats are refusing to finance the closure of the US military prison at Guantanamo Bay until the Obama administration submits a detailed plan. On Tuesday, Democratic leaders said they would reject an $80 million request to relocate Guantanamo’s 240 prisoners and vowed to block the transfer of any prisoners into the United States. The move follows a similar action by House Democrats last week. It could mean delaying President Obama’s promise to close the Guantanamo Bay prison by at least several months.