Robert F. Kennedy Jr. has ignored complaints for months that he will simply play spoiler to a presidential rematch between President Joe Biden and former President Donald Trump.

Kennedy, who is running as an independent after a short run in the Democratic primary, even accused Biden of handing the race to Trump by refusing to bow out. He held a highly publicized press conference on Wednesday in which he urged the president to sign a “no spoiler pledge” in which the “weakest” candidate promises to drop out.