The U.S. dollar edged up on Tuesday to within striking distance of its one-year high as investors closely watch U.S. President-elect Donald Trump's search for a Treasury secretary, which is widening after stalling over the weekend.

The treasury secretary is a high-level Cabinet position charged with advising the president on matters related to financial, economic and tax policy.

Trump's transition team is searching for a new treasury secretary candidate amid a deadlock between the two front-runners.