Republican presidential candidate Donald Trump said he intends to continue holding outdoor rallies, despite the security lapses that led him to only narrowly survive an assassination attempt. The US Secret Service, which is responsible for protecting presidents, election candidates and other top public officials, has agreed to “substantially step up” its operations, Trump wrote on his social media platform Truth Social on Saturday. “They are very capable of doing so. No one can ever be allowed to stop or impede free speech or gathering!!!” he posted. Trump has not held an outdoor rally since a…