By Melanie Zanona and Haley Talbot | CNN GOP Rep. Mike Gallagher of Wisconsin will resign from Congress early, handing another blow to Speaker Mike Johnson and his razor thin Republican majority. In a statement, Gallagher confirmed he will resign effective April 19. Gallagher did not include a reason for stepping down but said he came to the decision after “conversations with my family.” The House already has three vacancies – left by two Republicans and one Democrat – and Republican Rep. Ken Buck of Colorado has said he will leave Congress after this week. Once Buck and Gallagher leave,...