"Chairman Hoekstra has raised these issues with the administration to ensure that the Intelligence Committee is able to conduct its job of oversight," Mr. Ware said. "Intelligence officials have committed to being forthcoming with Congress, and Chairman Hoekstra is going to hold them to their word."

Mr. Hoekstra's blunt letter is evidence of a rift between the White House and House Republican leaders over the administration's perceived indifference to Congressional oversight and input on intelligence matters. Mr. Hoekstra wrote that he had shared his complaints with House Speaker J. Dennis Hastert, Republican of Illinois, and that the speaker "concurs with my concerns."

A spokesman for Mr. Hastert declined to comment.

The letter appears to have resulted at least in part from the White House's decision, made early in May, to name Gen. Michael V. Hayden to lead the Central Intelligence Agency, with Stephen R. Kappes as his deputy. The letter was sent the day of General Hayden's confirmation hearing before the Senate Intelligence Committee.

Mr. Hoekstra (pronounced HOOK-stra) complained publicly about the choices when they were announced, but his private letter to Mr. Bush was much harsher. He warned that the choice of Mr. Kappes, who he said was part of a group at the C.I.A. that "intentionally undermined the administration," sends "a clear signal that the days of collaborative reform between the White House and this committee may be over."

Mr. Hoekstra also expressed concern about the intelligence reorganization under John D. Negroponte, the first director of national intelligence, who he said was creating "a large, bureaucratic and hierarchical structure that will be less flexible and agile than our adversaries."

Image Representative Heather A. Wilson, whom President Bush praised in June, has said she has "deep concerns" about intelligence reforms. Credit... Marla Brose/The Albuquerque Journal, via Associated Press

Mr. Hoekstra's views on oversight appear to be shared by some other Intelligence Committee members.

"I think the executive branch has been insufficiently forthcoming on a number of important programs," Representative Heather A. Wilson, Republican of New Mexico, said in an interview. She would not discuss any programs on which the committee had not been briefed, but she said that in the Bush administration, "there's a presumption that if they don't tell anybody, a problem may get better or it will solve itself."