Investing.com - The dollar was lower Tuesday as Trump's national security adviser Michael Flynn resigned late Monday.
The dollar index was off 0.19% at 100.81 at 03:15 ET. It shed 0.18% to 113.52 yen.
Flynn stood down amid allegations of improper contact with Russian officials.
Investors are looking to Fed Chair Janet Yellen's testimony to the Senate for guidance on interest rates.
The euro was up 0.19% at $1.0618 as German GDP Q4 growth came in slightly below estimates.
Euro-zone fourth-quarter GDP figures are due out later in the session.
The dollar was lower against the yuan as Chinese PPI inflation data beat forecasts.