WASHINGTON – President Bush on Thursday endorsed a plan for closing 22 major military bases and reconfiguring 33 others, leaving their fate to Congress.

Bush had until Sept. 23 to either accept the entire report from an independent commission and send it to Congress, or return it to the commission for further work.

The report will become final in 45 days unless Congress acts to reject it in full. In previous rounds, lawmakers never have rejected reports, meaning communities probably have little hope of a reprieve for their bases.

Bush had said that for the process to be “nonpolitical” the commission’s decision would have to stand. He got the report last Friday from the nine-member Base Realignment and Closure commission.

Bush’s submission of the report comes as his administration and Congress are preoccupied with aiding the hurricane-ravaged Gulf Coast and addressing other priorities. A GOP-led effort in the Senate to derail the base-closing process, which Republican leaders feared could embarrass them, has fizzled.

The commission said its recommendations would mean annual savings of $4.2 billion, compared with $5.4 billion under the plan it received in May from Defense Secretary Donald H. Rumsfeld. Rumsfeld had recommended closing 33 major bases and realigning 29 others.

The commission largely endorsed Rumsfeld’s vision to restructure the domestic network of military bases to save billions of dollars over the next two decades and streamline the Army, Navy and Air Force.

On the closure list is Maine’s Brunswick Naval Air Station.

But commissioners did recommend keeping open several major bases against the Pentagon’s wishes, including the shipyard in Kittery, Maine, a submarine base in Groton, Conn., and Air Force bases in South Dakota and New Mexico. The Defense Finance and Accounting Service center in Limestone, Maine, also was spared by the commission.

Also, under the commission recommendations, the Maine Air National Guard base in Bangor is slated to gain 12 KC-135 refueling tankers – eight from a Guard base in Niagara Falls, N.Y., and two each from bases in Alabama and Mississippi.

The commission denied politics played a role in any decisions, even as it voted to keep open bases in the home states of Sen. John Thune, R-S.D., and other senators leading the opposition. That all but eliminated the possibility of congressional intervention.

In the House, the vast majority of members overwhelmingly support this round of closures and consolidations, which are the first in a decade.

Military analysts have said this may be the last chance the White House and Pentagon have to save money by shuttering bases. Congress probably will resist approving an additional round of closures, analysts say, given the large amount of heartache lawmakers experienced.

Congress reluctantly authorized this round of closures only after the White House threatened to veto an entire defense bill if it did not give the Pentagon the go-ahead.