Vice President Kamala Harris says the US will find new ways to "raise the pressure on Beijing", accusing China of bullying in the hotly disputed Asian waters for the second time in two days. China claims almost all of the resource-rich South China Sea, through which trillions of dollars in shipping trade passes annually, with competing claims from four Southeast Asian states including Vietnam. Harris made the comments on a visit to Vietnam to stress US commitment to Asia, a trip critics have slammed as tone-deaf given the parallels with the superpower's evacuations from Saigon and Kabul.