Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Mueller to Testify in Open Congressional Hearing VOA News U.S. President Donald Trump blasted former special counsel Robert Mueller, who agreed to provide open testimony before congressional committees next month. "The Mueller thing never stops," Trump said on the White House South Lawn before his departure to the G-20 summit in Osaka, Japan. "How many times do we have to hear it? It never ends," Trump said, adding his often-repeated line of no obstruction and blaming the Democrats for "criminal activities," calling it "the greatest hoax ever in the history of our country." The chairmen of the U.S. House Judiciary Committee and the House Intelligence Committee, Rep. Jerrold Nadler and Rep. Adam Schiff, announced in a letter late Tuesday that Mueller would appear July 17, and that they and all Americans looked forward to hearing from him. Mueller led a nearly two-year investigation into Russian interference in the 2016 election and allegations that Trump obstructed justice by trying to shut down the probe. .