President Barack Obama will sign health reform legislation into law on Tuesday morning, White House Press Secretary Robert Gibbs said Monday.

Gibbs said the president plans a late morning bill signing, flanked by House and Senate lawmakers who supported the legislation.

Gibbs said a signing event would take place at the Department of the Interior after having originally said the signing could take place outdoors on the White House's South Lawn, if weather had permitted.

"I think each and every member of the House and Senate that supported health reform will be invited," Gibbs said, adding that he would expect many of those lawmakers to attend a bill signing.

Obama's signature would put into effect one of the most sweeping overhauls to the U.S. healthcare system in history.

The House passed the Senate's healthcare bill in a close vote on Sunday night, sending it to the White House for approval. The House also passed last night a bill making a series of changes to the bill Obama will sign. The Senate is expect to take up that package of changes this week.

Gibbs said that the culmination of months of debate wouldn't stop Obama's stumping on healthcare, though, signaling that it will extend well into this fall's midterm elections.

"I assume the president will talk about healthcare for a long time," the press secretary said. "I have no doubt that we'll be on the road extensively in the fall as it relates to healthcare and as it relates to those who supported it."

Updated at 3:23 p.m.