TAIPEI, Taiwan (AP) — It didn’t take long for relations with China to become an issue for new U.S. President Joe Biden. A show of force by the Chinese air force off Taiwan last weekend prompted a U.S. response, even as Biden and his administration focus on pressing domestic issues in what is still their first week in office. The U.S. State Department issued a statement urging China “to cease its military, diplomatic, and economic pressure against Taiwan” after a dozen Chinese warplanes entered the self-governing island’s air defense identification zone on Saturday. China then sent 16 more planes on Sunday. The Taiwan issue will likely remain a source of friction in U.S.-China relations.