MIAMI -- Colorado Rep. Tom Tancredo's trip to South Florida ran into trouble on Tuesday because of several threats. Tancredo sparked controversy recently when he likened Miami to a third-world country. The Republican representative was invited to speak at the Rusty Pelican restaurant on Virginia Key. But the restaurant canceled the appearance when the Miami Police Department received word that someone contacted the Miami Herald and said there would be trouble if Tancredo showed up. Miami police are investigating the threat. "We're trying to determine where that information came from and we're trying to determine if it's a credible threat...