Nassau County Democrats filed a complaint with the Federal Election Commission on Thursday alleging an "illegal and unreported in-kind contribution" by providing municipal services to host former President Donald Trump's rally Wednesday at the Nassau Coliseum.

The former president is set to hold a rally at the Nassau Coliseum on Long Island, on Wednesday night, in one of his first events since a gunman was seen pointing a rifle through the perimeter fence of Trump's International Golf Club in West Palm Beach, where he was golfing on Sunday.

Security is expected to be extraordinarily tight on Wednesday for former President Donald Trump's campaign rally at Nassau Coliseum​.

One day after former President Donald Trump's rally on Long Island, local Republicans are calling it a great success, while Democrats are asking questions about who paid for all the security.

Officials say local law enforcement is working with the federal agencies, including the Secret Service, to keep the former president, attendees and residents in the nearby communities safe.

Nassau County officials are enacting strict security ahead of Republican presidential nominee Donald Trump's campaign rally at the Coliseum on Wednesday night.

In a complaint to the Federal Election Commission, Long Island Democrats are demanding that former President Donald Trump and local Republicans reimburse taxpayers for security provided by local police,