SAN FRANCISCO (Reuters) -China is objecting to a U.S. proposal for Asia Pacific Economic Cooperation (APEC) members to incorporate sustainability and inclusivity into their trade and investment policies, a source briefed on the negotiations said on Wednesday. Talks on the issue were continuing at the APEC summit in San Francisco to try to find language that the group's 21 member states could agree on, the source said. U.S. Trade Representative Katherine Tai told a trade-focused plenary meeting she hoped the proposal, dubbed by the Biden administration as the "San Francisco Principles for Integrating Inclusivity and Sustainability into Trade and Investment Policy" could be still be finalized.