All lights in the US have a slight offset to the right. In fact, all countries where traffic stays to the right, lights are aimed that way to 1) not blind opposing traffic, 2) light signs, 3) illuminate potential crossers (human or otherwise)
This is a DOT requirement in the US.
BUT, having said this, only a portion of the beam is offset and the "center" should still be centered. You might need to have the light recalibrated. They should have a machine that can measure and adjust it.