The dollar was firm Tuesday as the market priced in a near-certain rate hike by the FOMC .
The dollar index was up 0.21% at 101.47 at 02:30 ET. It was up 0.23% at 115.14 yen.
The FOMC is expected Wednesday to raise its target rate by 25 basis points.
The market is currently pricing in a 95% chance of Fed hike tightening. Investors will be looking for guidance on the pace of expected further rate hikes this year. The market is coming around to the idea of possibly four hikes this year rather than three previously.
The pound was down 0.67% at $1.2136 as U.K. parliament cleared the way for PM Theresa May to trigger Brexit talks.
The euro fell back below $1.07 as the market awaited the outcome of the Dutch elections on Wednesday.