Washington ? Congress and the Bush administration should work together to allow the U.S. to permanently imprison some of the more dangerous Guantanamo Bay detainees elsewhere so the facility can be closed, Defense Secretary Robert Gates said Thursday.

Gates said the challenge is figuring out what to do with hard-core detainees who have “made very clear they will come back and attack this country.”

He said it may require a new law to “address the concerns about some of these people who really need to be incarcerated forever, but that doesn’t get them involved in a judicial system where there is the potential of them being released,” Gates told the House Defense Appropriations subcommittee.

Gates’ comments came as the Pentagon released the transcript from a Guantanamo hearing involving a Saudi linked to the Sept. 11 attacks. He said he got money transfers from two hijackers inside the United States hours before the planes struck the World Trade Center and Pentagon.

Mustafa Ahmad al-Hawsawi, who was based in the United Arab Emirates on Sept. 11, 2001, denied that he was a member of the al-Qaida terrorist network and that he sent money to the hijackers.

Lawmakers said Thursday the Guantanamo facility hurts U.S. credibility with its allies. They asked that Gates give more thought to how it could be closed and detainees moved to a military prison.

“I hope that we can work to find some way to correct this problem, because as you say, it is a stain on our reputation and we can’t afford it,” said Rep. David Obey, D-Wis.

Of the 385 detainees at Guantanamo, fewer than 100 would be considered hard-core, Gates said. He said he assumes there would be room in the military prison system for them.

But he said he did not know if using the military brigs would allow the U.S. to keep the detainees over the long term.

He noted that the U.S. is struggling to return several hundred of the detainees to their home countries, but those nations do not want them.

Al-Hawsawi is one of 14 “high value” detainees who are likely to be considered more dangerous. They were transferred to Guantanamo in September after being held in secret CIA prisons abroad. The hearings are being conducted to determine if they are enemy combatants who can be held indefinitely and prosecuted for war crimes.