President Donald Trump said Wednesday he intends to nominate a criminal defense lawyer and former top federal prosecutor to lead the FBI, a post that has become even more high-profile since the president abruptly fired the former director a month ago.

Mr. Trump made public his selection of Christopher Wray on Twitter, saying the former assistant attorney general in the GOP administration of former President George W. Bush had “impeccable credentials” to succeed James Comey, the director he fired last month.

...