Vice President Biden in Houston as son gets medical tests

WASHINGTON (Reuters) – U.S. Vice President Joe Biden on Monday accompanied his son Beau to Houston where the younger Biden was undergoing tests to investigate symptoms that led to his hospitalization last week, the White House and the Delaware Department of Justice said. "Beau Biden is being evaluated to determine the cause of an episode of disorientation and weakness that he experienced while on vacation with his family," the White House said in a statement. Biden, 44, is the oldest son of the vice president and was hospitalized in 2010 for what doctors described as a mild stroke. …