Former top Justice Department official Sally Yates said on Sunday that if Donald Trump were not president, he would have been indicted on obstruction charges in special counsel Robert Mueller's Russia investigation.

Yates, a career federal prosecutor who rose to acting attorney general before Trump fired her in 2017 less than two weeks into his presidency, told NBC's "Meet the Press" the Republican president was shielded by department guidelines that a sitting president should not be indicted.

"I've personally prosecuted obstruction cases on far, far less evidence than this," Yates said. "And yes, I believe, if he were not the president of the United States, he would likely be indicted on obstruction."