WASHINGTON (CNN) -- Senate Majority Leader Harry Reid, D-Nevada, indicated Democrats weren't yielding on their Iraq stance Tuesday, the same day President Bush invited lawmakers from both parties to the White House next week to discuss the Iraq spending bill.

"We're ... determined to provide the troops a strategy for success, which the president has failed to do since the start of this war more than four years ago," Reid said at a Capitol Hill press conference.

Reid also said, "American troops are putting their lives at risk every day. They deserve a strategy worthy of their sacrifices, not the political rhetoric the president's offering, which he again offered today."

"We are speaking for the American people, he isn't," he added.

According to a Democratic leadership aide, Reid and House Speaker Nancy Pelosi, D-California, are prepared to reject Bush's invitation to come to the White House unless he drops what they describe as "preconditions" for that meeting, including his vow to veto any bill that includes a withdrawal deadline.

White House spokeswoman Dana Perino told reporters next week's talks would be discussions and "not a negotiation."

-- CNN'S Andrea Koppel and KD Fabian contributed to this report