A dozen Republican senators are seeking the immediate release of a Biden administration blueprint for expanding and overhauling the U.S. immigration system, according to a draft document obtained by selected media but not yet disclosed to Congress or the public. In a joint letter to Homeland Security Secretary Alejandro Mayorkas (pdf), the senators demand the release of a 46-page draft called the “DHS Plan to Restore Trust in Our Legal Immigration System,” which was first reported by The New York Times and reportedly maps out the Biden administration’s plans for a significant expansion of the legal immigration system. According to The New York Times, the document “lists scores of initiatives intended to reopen the country to more immigrants,” while not just rolling back some Trump-era policies but also “addressing backlogs and delays that plagued prior presidents.” Most of the policy proposals couldn’t be implemented by executive authority, but would require a …