PHOENIX (AP) — Independent presidential candidate Robert F. Kennedy Jr. filed an election complaint Wednesday alleging CNN is colluding with Democratic President Joe Biden and presumptive Republican nominee Donald Trump to exclude him from a debate the network is hosting next month.

Kennedy alleges the requirements to participate in the June 27 debate were designed to ensure only Biden and Trump would qualify and Kennedy claims he is being held to a higher standard.

“CNN is making prohibited corporate contributions to both campaigns and the Biden committee and the Trump committee have accepted these prohibited corporate contributions,” a lawyer for Kennedy, Lorenzo Holloway, wrote in a letter to the Federal Election Commission.