Banning Lobbying and Safeguarding Trust Act or the BLAST Act This bill revises the post-employment lobbying ban on former Members and elected officers of Congress. Specifically, it imposes a permanent ban on lobbying contacts by a former Member of the U.S. Senate (currently, a two-year ban), a former Member of the U.S. House of Representatives (currently, a one-year ban), or a former elected officer of the House or Senate (currently, a one-year ban).