The Secretary of State questioned Mehmet Oz's ties to Turkey on Friday.
Oz voted in a Turkish election despite denying he was involved in politics in the country.
Oz, who is backed by Donald Trump, is running in a high-profile Pennsylvania Senate Republican primary against David McCormick, who is endorsed by Mike Pompeo. The primary is on May 17.
Maybe it is all innocent, maybe it is straight up, but we and the people of Pennsylvania and the Americans who he will be are still waiting.
Although Oz is a dual citizen of both Turkey and the US, it is a matter of who is best suited to hold office in Pennsylvania, a state previously represented by apatriotic American conservative.
Brittany Yanick, communications director for the Oz campaign, told Insider that the comments werepathetic.
Dr. Oz will give up his citizenship when he is elected to the Senate.
On Friday, Oz was met with boos and jeers when his video was played on screens. The controversial TV doctor faces scrutiny for not being from Pennsylvania and for using his in-laws address to vote in the state.