A second batch of classified documents belonging to President Biden was reportedly discovered by White House aides, days after the discovery of documents from a former private office of the president’s became public. The new batch was found in separate location from the first, NBC News first reported, citing a personal familiar with the matter. The first batch was found in a University of Pennsylvania office in Washington that once belonged to Biden between his time as vice president and his 2020 presidential campaign. Since then, White House aides have been looking for any additional classified documents in other locations,...