March 6 (Reuters) - A U.S. government agency said on

Thursday the Biden administration's approval of California's

landmark plan to end the sale of gasoline-only vehicles by 2035

is not subject to review and potential repeal by Congress.

Last month, the U.S. Environmental Protection Agency under

President Donald Trump sent the approval to Congress saying it

was properly considered a rule under the Congressional Review

Act. The Government Accountability Office said the decision

should be considered an order and is not reviewable.