This successful upgrade to statehood will most likely be followed by an effort for Palestine to become a member of the International Criminal Court (ICC). However, if Palestine joins the ICC, members of the Israeli military in West Bank and Gaza could be arrested and charged for acts committed in war zones.
The US was unilaterally opposed to Palestine's bid for statehood, due to support of Israel and the belief that only peaceful negotiation will help solve the conflict between the Hamas and Israel.
http://cnn.com/video/#/video/bestoftv/2012/11/29/exp-erin-un-palestine-vote.cnn