The proposed takeover of the Chicago Stock Exchange by a group of Chinese investors is stirring controversy in Washington, where lawmakers have urged the Obama administration to submit the deal to a national security review.
The buyout, announced earlier this month, would mark the first time a Chinese company took over an American bourse and would give the buyer, Chongqing Casin Enterprise Group, a foothold in the American equities market.
Forty-five members of Congress wrote to the US Treasury department in a letter this week urging that the deal be reviewed by the Committee on Foreign Investment in the US, or Cfius, which has the power to block any deal that jeopardises US national security.
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