WASHINGTON -- The Rev. Samuel Rodriguez Jr., president of a group he says represents 15 million Hispanic evangelical Christians, said his fellow social conservatives are making a historic mistake. By spurning proposals to give illegal immigrants a shot at citizenship instead of deportation, they are making it easier for supporters of abortion and same-sex marriage to win elections. Article Tools ''This is a watershed moment for the Republican Party," said Rodriguez, digging into a steak at an American flag-festooned restaurant near the US Capitol, where he had been lobbying GOP leaders last week. ''Hispanics are social conservatives. Their votes can...