The dressing can be made ahead and stored, covered, in the refrigerator for a couple of days.
To prepare dressing, combine first 4 ingredients in a small saucepan. Bring to a boil; cook 2 minutes. Remove from heat. Stir in vinegar, oil, salt, and black pepper. Chill.
To prepare salad, combine wild rice and remaining ingredients in a large bowl. Drizzle rice mixture with dressing, tossing to coat.
This was really colorful and flavorful. I made the dressing the night before. Then, day of the dinner party, I chopped everything in the food processor. Cook the rice and the orzo while you're chopping. Then combine. Easy and quick.