Read MoreThe U.S. ambassador to China is stepping down next month. Terry Branstad’s announcement comes amid increasingly strained relations between the two countries. CBSN contributor Isaac Stone Fish, senior fellow at the Asia Society Center on China Relations, joined CBSN with more on the impact this decision might have.The U.S. ambassador to China is stepping down next month. Terry Branstad’s announcement comes amid increasingly strained relations between the two countries. CBSN contributor Isaac Stone Fish, senior fellow at the Asia Society Center on China Relations, joined CBSN with more on the impact this decision might have.