(COMBO) This combination of pictures created on June 11, 2019 shows US President Donald Trump(L) as he departs the White House, in Washington, DC, on June 2, 2019, and former US vice president Joe Biden during the kick off his presidential election c WASHINGTON - The Biden campaign has agreed to participate in three planned general election presidential debates in the fall, while slamming the Trump campaign’s push for more debates as an “effort to change the subject” and “create a distracting ‘debate about debates.’”Joe Biden’s campaign manager Jen O’Malley Dillon penned a letter, obtained by Fox News, to the Commission on Presidential Debates outlining the campaign’s expectations for the debate schedule this fall.RELATED: Blind voters fear.