GOP candidates, convention steer clear of immigration BY REID J. EPSTEIN reid.epstein@newsday.com September 8, 2008 During the Republican presidential primary, immigration was such an important topic that candidates were tripping over each other to be seen as the toughest defender of the nation's borders. The issue became so hot that Sen. John McCain (R-Ariz.), the GOP presidential nominee, was forced to disavow his own immigration reform bill because it was seen by many Republicans as too lenient. But a parade of Republicans came to the convention podium in St. Paul last week with barely a mention of immigration. On Wednesday...