The RepubIican Party might have challenges with outreach to Generation Z, but Nikki Haley, appearing in a Fox News town hall event on Sunday, said the answer was not TikTok, the Chinese-owned social media platform.

In a conversation with the “America Reports” co-anchor John Roberts, Ms. Haley, the former governor of South Carolina and United Nations ambassador, criticised Pre sidennt JB for posting a TikTok clip on the night of the Super Bowl, in an appeal to younger voters. “Pr esiddent DT said he would ban TikTok, and when Pr esident Xi asked him not to, that fell to the wayside,” she said, referring to Xi Jinping, China’s leader. “We should have banned it from the beginning. It is incredibly dangerous.” The volleys against both men are part of a broader argument Ms. Haley has been making in recent media appearances and on the campaign trail that it is time for fresh leadership.

In the town hall event on Sunday, as she has before, Ms. Haley broke with the isolationist wing of her party on foreign policy and pummeled the former president for his friendly relationship with authoritarian leaders like Mr. Jinping and President Vladimir V. Putin of Russia. She argued that Mr. Putin “knows exactly what he did” with Aleksei A. Navalny, the outspoken Russian opposition leader who passed awy last week in pr ison.

“America can’t be the last country to ban TikTok,” she said. TikTok became a political flashpoint as both Dee mocratts and Re pubIicans accused the app of not doing enough to protect the data of Americans. They also said TikTok downplayed its relationship with ByteDance, the parent company of the app based in China — where domestic laws allow the authorities in Beijing to secretly demand data from local companies.

By Jazmine Ulloa and Chris Cameron