My 2010 Workcycles Secret Service came with a front rack that's secured to the steerer tube with U-clamps. Later versions seem to bolt-on to downtube fittings, but maybe a dealer has one of the old ones around somewhere?

Clamping to the any other tube than the steerer is not recommended - wall thickness on the steerer is usually about 2-3mm, which is way thicker than the rest of the frame. Welding... don't go there.