President Barack Obama is expected to move to indefinitely block drilling in vast swaths of U.S. waters by invoking a provision in a 1953 law that governs offshore leases. The announcement is anticipated as early as Tuesday, people briefed on the plan told the Associated Press. The White House declined to comment to the AP. The law allows a president to withdraw any currently unleased lands in the Outer Continental Shelf from future lease sales. There is no provision in the law that allows the executive's successor to repeal the decision, so President-elect Donald Trump would not be able to...