Sign up now: Get ST's newsletters delivered to your inbox FILE PHOTO: Billionaire investor George Soros speaks to the audience at the Schumpeter Award in Vienna, Austria June 21, 2019. REUTERS/Lisi Niesner/File Photo U.S. President Donald Trump said on Wednesday that billionaire financier and major Democratic donor George Soros and his son should be charged under the Racketeer Influenced and Corrupt Organizations Act, or RICO, but offered no evidence to support the allegations. Trump has embarked on a campaign of threats and lawsuits against political adversaries, news organizations, and law firms, using a mix of litigation, executive power, and his...