Donald Trump's campaign blocked a Politico reporter from attending the candidate's victory rally on Tuesday night, continuing a troubling trend of denying access to reporters who write critically about Trump and his campaign. Ben Schreckinger, who has been covering Trump for more than six months, was denied access to Tuesday night's "press conference" -- Trump did not actually take any questions -- despite the fact that the campaign had already given press credentials. In blocking Schreckinger, the Trump campaign appears to have been following through on a threat it made last week to exclude Politico reporters from campaign events because...