Donald TrumpDonald John TrumpTrump suggests some states may 'pay nothing' as part of unemployment plan Trump denies White House asked about adding him to Mount Rushmore Trump, US face pivotal UN vote on Iran MORE should accept the debate guidelines and dates that were set nearly a year ago, a Hillary ClintonHillary Diane Rodham ClintonHillary Clinton labels Trump coronavirus executive actions a 'stunt' What Trump got wrong by pushing coal Trump is fighting the wrong war MORE aide said Sunday. 

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"The dates are the dates, the debates are the debates. These rules and these dates were set a long time ago. We agreed to them immediately. Secretary Clinton looks forward to this debate," Clinton campaign manager Robby Mook said on ABC's "This Week." 

"We welcome these debates. Let's just get on with it. Nobody's ever argued over the rules. This is typical Donald Trump. I don't know if he's afraid to debate. I don't know if he just wants the attention of causing controversy. But either way, they just need to get over it. Let's have these debates and let the American people make their judgment."

Trump, the Republican presidential nominee, has raised concerns about the debate schedule conflicting with several NFL games. 

Trump has accused Clinton, the Democratic nominee, of trying to "rig the debates," although the schedule was set almost a year ago by the nonpartisan Commission on Presidential Debates.