(CNBC) Macquarie Group’s Gareth Berry told CNBC on Friday: “The U.S. dollar was meant to be a safe-haven currency … But we have had episodes in the past where the dollar has weakened around political events in the U.S. … It’s rare but happens from time to time.” Berry cited two previous occasions where this happened — during the 2011 debt ceiling crisis in the U.S. as well as the 2016 election. The Japanese yen and euro could serve as key alternatives to the dollar.