With tensions running high ahead of President Trump's first State of the Union speech, it was unclear what kinds of outbursts or demonstrations the evening might produce. It's considered gravely disrespectful for lawmakers to disrupt presidential addresses, but some - such as Rep. Joe Wilson, R-S.C., who yelled "You lie!" at President Obama in 2009 - have done it anyway. House Minority Leader Nancy Pelosi told House Democrats Tuesday not to interrupt Trump and instead "let the attention be on his slobbering self." She said that if Democrats want to protest, they should join the group that will not attend...