Trump says he has never heard the term 'second lady'

President Trump said he never heard of the term "second lady," referring to the vice president's wife, Karen Pence, in his remarks to a crowd on the Fourth of July at the White House. Subscribe to The Washington Post on YouTube: http://bit.ly/2qiJ4dy Follow us: Twitter: https://twitter.com/washingtonpost Instagram: https://www.instagram.com/washingtonpost/ Facebook: https://www.facebook.com/washingtonpost/