As of June 28, 2019, Yang had received donations from more than 130,000 individual donors in at least 20 U.S. states, thereby meeting at least one of the requirements to be included in the first and second debates for Democratic presidential primary candidates, as well as the donor requirement for the third and fourth debates. The Democratic National Committee randomly determined that Yang would participate in the second night of the first debate, which took place in Miami on June 27. During the debate, Yang was asked only two questions and allowed to speak for two minutes and 56 seconds, the last time of any candidate. He claimed that his microphone malfunctioned, initially suggesting to the debate moderators that technical difficulties might have occurred. An NBC spokesperson said, "At no point during the debate was any candidate's microphone turned off or muted", but Yang and his supporters have provided video evidence they claim show Yang speaking up but not being heard.
On 29 June 2019 at the G20 summit, Trump and Chinese president Xi Jinping agreed to resume trade negotiations. Trump made statements implicating plans to ease the restrictions on U.S. companies doing business with Huawei, explaining that they had sold a "tremendous amount of products" to the company, that they "were not exactly happy that they couldn't sell", and that he was referring to "equipment where there's no great national security problem with it." BBC News considered this move to be a "significant concession".
On June 30, 2019, Trump, Kim, and South Korean President Moon Jae-in held brief talks in the Korean Demilitarized Zone, marking the first time a sitting U.S. president had set foot on North Korean soil. They agreed to resume negotiations.