Former President Donald Trump's affinity for golf presents a major security challenge for Secret Service, security experts said.Manuel Balce Ceneta/APOn Sunday, a suspect was apprehended after an apparent assassination attempt on Donald Trump.Experts told BI that protecting a president at outdoor events presents tough security challenges.They said that Secret Service agents handled the incident exactly how they were supposed to.An apparent assassination attempt against Donald Trump on Sunday was another stark reminder of the challenges the Secret Service faces when protecting a president outdoors, security experts told Business Insider.The Secret Service fired shots at a suspect after agents spotted a man with an AK-47-style rifle at the Trump International Golf Club in West Palm Beach, Florida, where the former president was playing, authorities said.