ARTIST AND THE US LAWS

I'm an artist and I've been using images of US money n my Artwork. I'm fully aware of the US laws regarding the replication of money. I want to be fully abiding by the law. However, money CAN be used in artwork depending upon the size of the print. So, it is BAFFLING to me, that when I try and make a print that is 24" x 48" -ABSOLUTELY HUGE- Adobe products won't print it. My image is completely consistent with the US laws. Why can't photoshop realize the printed image is so large and therefore, doesn't break the law? So frustrating.