Revealed: Mar-a-Lago's private security is OVERRULING Secret Service to decide who can get near Trump despite Chinese woman's arrest with four phones and malware

• Chinese national Yujing Zhang was arrested after first telling an agent she was heading for the club pool 
  
• She was allegedly carrying a thumb drive loaded with malware as well as two passports and four phones
  
• She has still to appear in court and the Chinese embassy said Thursday it was offering her consular assistance
  
• Arrest has turned spotlight on club, where members pay $200,000 joining fee, $14,000 annual dues and may bring guests
  
• Secret Service made rare public statement about security at the club saying it 'does not determine who is invited or welcome' to it