Larsen does seem to regret making his posts, but only in so far as they created controversy. He sure doesn’t seem to regret the sentiment.
Hey NDGOP, Stop Letting People Like Oley Larsen Speak for You

State Senator Oley Larsen (R-Minot, top right) claimed Congresswoman Ilhan Omar (D-MN, bottom left) was trained by al Qaeda in an October Facebook post. Forum News Service