For more Forex news & info, please visit http://www.ufxmarkets.com... The US Dollar strengthened versus all major currencies after the Japanese government took steps to curb the yen's strength, spurring investors towards the safety of the US Dollar. In addition there is still concern that European leaders will struggle to contain the region's debt crisis. Wall Street closed negative as MF Global Holdings Ltd filed for bankruptcy, after speculating on European sovereign debt, driving stocks down. The NASDAQ dropped by -1.93% and the Dow Jones fell by -2.26%.