Security measures have been tightened around the Mar-a-Lago residence in Florida, which belongs to former US President Donald Trump, reports CNN. Palm Beach city officials said the security measures would lead to additional road closures at least until Election Day. In addition, city officials claim that the increased security measures were ordered by the US Secret Service, not local law enforcement or officials. The tightening of measures follows an assassination attempt on Trump last Saturday at a rally in Pennsylvania. New threats to Trump Yesterday, July 19, the United States arrested a ma…