"The decision is rooted in the poor U.S. government finances, which make us think that we need to make an effort to find an alternative way of conducting our liquidity and risk management," Investment Director Anders Schelde said in a written statement.

"Thus, it is not directly related to the ongoing rift between the U.S. and Europe, but of course that didn't make it more difficult to take the decision," he added.

quotes from the Reuters article