In their joint press conference, Obama declared that in “candid 
discussions” he had “conveyed to President Xi [Jinping] our significant concerns 
over land reclamation, construction and the militarisation of disputed 
areas” and reiterated that the US “will continue to sail, fly and 
operate anywhere that international law allows.” While acknowledging 
that the US had no claims, Obama declared that “we just want to make 
sure that the rules of the road are upheld.”
In reality, the Obama administration has deliberately raised the 
political temperature in the longstanding territorial disputes in the 
South China Sea by encouraging rival claimants, in particular the 
Philippines and Vietnam, to adopt a more aggressive stance against 
China. US objections to Chinese land reclamation do not extend to its 
South East Asian neighbours with which Washington is seeking to 
strengthen military ties.
-- Peter Symonds, "A tense visit by Chinese president to the White House" (WSWS).