US Rebalance Uncertain as Obama Heads to Asia Pacific
The future of the U.S. rebalance to the Asia-Pacific remains uncertain as Barack Obama makes final visit to the region as president. Obama will tackle a range of issues at the G20 summit in Hangzhou, China. After that, he will head to Vientiane, Laos for the Association of Southeast Asian Nations summit and East Asia summit. White House correspondent Mary Alice Salinas reports.