DENVER - President Bush's spokesman says a diversity of views is welcomed at events across the country as the president builds support for his Social Security reforms, even as three people say they were singled out and removed from an event last week because of a bumper sticker. During a news conference Tuesday, White House spokesman Scott McClellan said the president hears different viewpoints on the news, and the events are meant to educate the American people about the problems facing Social Security. "That's what they're designed for, to talk about the problems that we face and to talk about...