"While I believe the Patriot Act appropriately balanced national security concerns and civil rights, I have always worried about potential abuses," Rep. Jim Sensenbrenner, a Wisconsin Republican, said in a statement.
"Seizing phone records of millions of innocent people is excessive and un-American."
And in a scathing letter to Attorney General Eric Holder, Sensenbrenner added: "These reports are deeply concerning and raise questions about whether our constitutional rights are secure. …
"How could the phone records of so many innocent Americans be relevant to an authorized investigation as required by the Act?"