White House coronavirus response coordinator Jeff Zients said on Wednesday the United States is developing a "new system for international travel" that will include new strong mitigation procedures like contact tracing..."We are exploring considering vaccination requirements for foreign nationals traveling to the United States," Zients said.

Commerce Secretary Gina Raimondo said at the same meeting that the spike in COVID-19 cases is preventing lifting international travel restrictions. "We want to move to a metrics-based system," Raimondo said. "Before we can do that, we have to get a better handle on the domestic situation, which requires us to get everyone vaccinated."