Letter to Donald Trump Jr, Executive Vice-President of the Trump Organization, Eric Trump, Executive Vice-President of the Trump Organization, Allen Weisselberg, Executive Vice-President and Chief Financial Officer of the Trump Organization, Mickael Damelincourt, Managing Director of the Trump International Hotel, and John Legere, Chief Executive Officer of T-Mobile USA, Inc. - Senator Warren, Rep. Jayapal Demand Answers on T-Mobile Executives' Trump Hotel Spending as Company Seeks Merger Approval from Trump Administration