Make it employer pressure, then. In any case, I’ve got nothing against corporate pressure. I was merely speculating that employers, and employer groups, who favor increased immigration–whether because they want “cheap labor,” as one side would have it, or are running out of “willing workers,” as the other side would have it–may have played a role in Frist’s decision by urging him to take a softer line, threatening to withhold support for his presidential campaign, etc.