U.S. Sen. John Thune (R-S.D.), a member of the Senate Committee on Finance, yesterday questioned Chris Magnus, President Biden’s nominee to be commissioner of U.S. Customs and Border Protection. During the hearing, Thune pressed Magnus on his position on sanctuary cities and the current border crisis, which has stretched immigration enforcement to a breaking point. Thune also questioned him about the current supply chain crisis that has been created by bottlenecks at American ports and the impact it has on market access for South Dakota producers.