Republican National Committee Chairman Reince Priebus on Sunday took a quick shot at a former top adviser to Mitt Romney‘s presidential campaign as he dismissed criticism of a plan that could bar CNN and NBC from hosting any 2016 Republican primary debates.

Mr. Priebus last week won unanimous support from the RNC to block the two networks from hosting any Republican debates if they proceed with plans to air entertainment shows devoted to former Secretary of State Hillary Clinton next year. Ms. Clinton is seen as a strong candidate if she decides to run, and Republicans see the films as signs of pro-Democrat bias.