WASHINGTON — Rep. Mike Gallagher, R-Wis., who announced last month he would not run for re-election, will resign from Congress early, he confirmed in a statement Friday. Gallagher’s departure before the end of his term in January is another blow to Speaker Mike Johnson, R-La., and House Republicans, who have been struggling to govern and demonstrate stability this Congress. Two sources familiar with the matter told NBC News of Gallagher's plan to resign early on Friday. The Wisconsin Republican then released a statement announcing that he will depart on April 19. The speaker's office confirmed that Gallagher informed Johnson of...