The U.S. dollar slipped on Friday as U.S. Republican senators said they want to decline the corporate tax rate in 2019, not right now.
The greenback fell to 113.32 yen from Monday's peak of 114.735, its top since March.
The dollar index edged up 0.1 percent to 94.493 after slipping 0.36 percent on Thursday. It is on track for a weekly loss of 0.5 percent.
The euro firmed to $1.1644, climbing from $1.1553, its 3 1/2-month trough scaled on Tuesday.
The pound sank 0.1 percent to $1.3141, on course to advance 0.5 percent for the week.