Democrats dropped an ad that Latinos had criticized as unfairly depicting undocumented immigrants as terrorists. The ad had disappeared from the Democratic Senatorial Campaign Committee's Web site Thursday. A link that had led to the advertisement now leads to a different ad. No announcement was made about what happened to the ad. A DSCC spokesperson did not return phone calls or an e-mail seeking comment. Democratic and Republican Latinos had complained Wednesday about the ad. The 35-second ad questioned GOP homeland security and anti-terrorism policies. It featured images of Osama bin Laden and North Korea's Kim Jong Il and two...