 But Vance now says his former comments were, quote, stupid. China has weighed in on Trump's choice of Vance. Beijing says it's opposed to China being made into a campaign issue. And Pierce John Ruich reports Vance has said that China is the biggest threat to the U.S. Republican presidential candidate Donald Trump named Vance as his running mate on Monday as the Republican National Convention got underway. And later on Fox News, Vance said Trump would negotiate to end the war in Ukraine so America could focus on China.