The White House is weighing a plan to dismiss Alexander Vindman from the National Security Council after he testified in President Donald Trump’s impeachment inquiry, preparing to position the move as part of a broader effort to shrink the foreign policy bureaucracy, two people familiar with the matter said. The White House intends to portray any house-cleaning as part of a downsizing of the NSC staff, not retaliation, according to the people. Some of the officials being targeted for removal from the NSC would be reassigned because they’re perceived as being disloyal to the president, three people familiar with the...