Washington ? Vice President Dick Cheney said Sunday the Pentagon and CIA are not violating people’s rights by examining the banking and credit records of hundreds of Americans and others suspected of terrorism or espionage in the United States.

Rep. Silvestre Reyes, D-Texas, the new chairman of the House Intelligence Committee, said his panel would be the judge of that.

National security letters permit the executive branch to seek records about people in terrorism and spy investigations without a judge’s approval or grand jury subpoena.

“The Defense Department gets involved because we’ve got hundreds of bases inside the United States that are potential terrorist targets,” Cheney said.

“The Department of Defense has legitimate authority in this area. This is an authority that goes back three or four decades. It was reaffirmed in the Patriot Act,” he said. “It’s perfectly legitimate activity. There’s nothing wrong with it or illegal. It doesn’t violate people’s civil rights.”

In a statement Sunday, Reyes promised that his panel would take a careful look at those claims.

“Any expansion by the department into intelligence collection, particularly on U.S. soil, is something our committee will thoroughly review,” Reyes said.

“We want our intelligence professionals to have strong tools that will enable them to interrupt the planning process of our enemies and to stop attacks against our country,” he said. “But in doing so, we also want those tools to comply fully with the law and the Constitution.”

The Pentagon and the CIA, to a lesser extent, have used this little-known power, officials said. The FBI, the lead agency on domestic counterterrorism and espionage, has issued thousands of such letters since Sept. 11, 2001.

The letters have generated criticism and court challenges from civil liberties advocates who claim they invade the privacy of Americans’ lives, even though banks and other financial institutions typically turn over the financial records voluntarily.

The New York Times, which reported Sunday on the expanded use of the technique by the Pentagon and CIA, said military intelligence officers had sent the letters in up to 500 investigations.