USD higher, but most of gain is against the AUD
As the clock ticks toward the FOMC decision, the dollar is holding onto gains. 
The green back is higher against all currencies with the exception of the CHF and it is virtually unchanged.   The other thing is most of the dollars strength is against the AUD. The AUDUSD is up by 1.14% at the midday snapshot. The next largest gains are vs the NZD (+0.32%), JPY (+0.30%) and the GBP (+0.20%).