well... Crappy "action adventure" movies aside, "clear and present danger" has nothing to do with how, when, where or why the American president sends troops. It is a pretty significant bit of American history, though. Anyone who cares can look it up. Here are some hints: Holmes, First Amendment, Schenck v. United States.US involvement in Colombia and the civil unrest within Colombia have a very long and complex history, the cocaine situation is part of a much larger picture. Anyone who wants to learn more about it can do so here: