A modest miss on U.S. inflation on Thursday put pressure on the dollar , which declined almost 4% in a week, marking its worst week in more than two and half years.
But Waller said on Sunday that the inflation print last week was "just one data point" and that other similar readings would be needed to show convincingly that inflation was slowing.
Waller did add, however, that the Fed could now start thinking about hiking at a slower pace.
U.S. inflation will likely remain high and keep the Fed on its monetary tightening path, Kong said.
Elsewhere, the Japanese yen weakened 0.9% versus the greenback to 140 per dollar, while the euro was down 0.2% at $1.0324.