The U.S. dollar index is a basket of six major currencies weighted against the greenback. See on the daily bar chart that USDX prices have made a strong rebound from the October low, but are now nearing trend-line resistance from a downtrend line that remains in place. The sledding may get tougher for the bulls as prices challenge the downtrend line. A push above the trend line would give the bulls more power to suggest new highs are coming. If the trend-line resistance holds and turns back the rally, that trend line only becomes stronger. Stay tuned! Jim Wyckoff