James Bopp, a conservative attorney who has led the opposition to campaign finance laws, today endorsed Republican presidential candidate Mitt Romney. Romney has been a major beneficiary of laws Bopp has advocated for. Bopp’s most well-known victory was in the 2010 Supreme Court case Citizens United, which struck down long-standing campaign finance laws by allowing corporations, non-profits, and unions to contribute unlimited amounts of money to political causes and candidates. Bopp was the original lawyer representing the conservative non-profit Citizens United.