Trump's comments followed a congressional stock trading ban clearing a Senate committee the same day. President Donald Trump on Wednesday suggested that former House Speaker Nancy Pelosi should be the subject of an insider trading investigation as a ban on congressional stock trading advances in the Senate.“Nancy Pelosi should be investigated. She has the highest return of anybody, practically in the history of Wall Street, save a few," he told reporters. "How did that happen? She knows exactly what’s gonna happen! ... she buys stock and then the stock goes up after the announcement's made."Pelosi's success in investing is well-known...