President Trump’s adviser and son-in-law Jared Kushner used the encrypted messaging service WhatsApp as well as his personal email account to conduct official business, a top House Democrat charged Thursday. The revelation came during a Dec. 19 meeting of the House Oversight and Reform Committee, which released the information in a letter Thursday. Chairman Elijah Cummings wrote to White House counsel Pat Cipollone to tell him that Kushner’s lawyer, Abbe Lowell, had confirmed during the meeting that Kushner “continues to use” WhatsApp to conduct White House business.