President Trump threatened Tuesday to have the military “build the remaining sections” of the U.S.-Mexico border wall, appearing to revive a call to use Pentagon money to finish the project ahead of a meeting with congressional Democratic leaders opposed to the president’s funding request. For their part, House Democratic Leader Nancy Pelosi and Senate Democratic Leader Chuck Schumer put out a joint statement Monday arguing Trump and his party will own a government shutdown if they can’t strike a deal. “People do not yet realize how much of the Wall, including really effective renovation, has already been built. If the...