In the U.S., Adelson is acting as a kingmaker in the Presidential race, as one of the better known richer-than-God people who are funneling unlimited amount of money to support chosen Republican causes. For example: "On Tuesday, Mitt Romney’s running mate, Representative Paul D. Ryan, is to appear at a fund-raiser at the Sands’s Venetian casino in Las Vegas; Mr. Adelson is likely to attend, according to a person close to him."
According to a WSJ report the dealings are under investigation by the Justice Department and the Securities and Exchange Commission.
http://www.nytimes.com/2012/08/14/us/politics/sheldon-adelsons-dealings-in-china-are-under-investigation.html?emc=na
http://online.wsj.com/article/SB10000872396390443537404577578900341481654.html