The man accused of attempting to assassinate US President Donald Trump at a White House reporters’ gala last month pleaded not guilty to all charges on Monday. Cole Allen, 31, of California, did not speak in court as his lawyer Tezira Abe entered the plea on his behalf. The charges include attempted assassination of the president, assault on a federal officer and firearms offences. Prosecutors allege Allen fired a shotgun at a US Secret Service agent and stormed a security checkpoint in a...