If a President claims executive privilege, what gives the 1/6 Inquisition the right to try and compel an advisor to testify????

"President Trump has invoked executive privilege; I don't have the authority to waive that privilege, so my hands are tied on that," Navarro told co-hosts Pellegrino and Lyndsay Keith. "I've told the committee quite candidly, 'Look, that's between you, the president, and his lawyers. If he waives the privilege, I'd be happy to come see ya. Until he does, I'm going to defend a principle that is really critical to this republic, which is executive privilege.'"
Navarro is declining to speak about confidential communications with the then-president about the Jan. 6 storming of the Capitol.
"Of course, we all know this is a partisan witch hunt," Navarro continued. "If you look at the composition of that committee, it's people who have been trying to take down Trump from day one, mostly Democrats, but also Liz Cheney, the trader Republican."

https://www.newsmax.com/newsma....x-tv/peter-navarro-j