With the selection of an old-line Democrat to give the keynote speech at the Republican national convention in New York at the end of the month, the chance of a convention floor fight over the immigration issue may have increased substantially despite the best efforts of the party establishment to suppress the issue."Republicans," reports Adam Nagourney in a front page article in Sunday's New York Times, "are pressing for a quick and quiet adoption of a platform to minimize dissent." But on the immigration issue, which Nagourney cites as being of particular concern to Republicans, keynote speaker Senator Zell Miller...