lung is not listed as one of the ingredients. Haggas is proscribed because of the presence of lung tissue. Without lung tissue in the product, it’s legal to import.
Amusing story about Haggis. I lived in the UK for several years and was most fond of Haggis. Returned to visit with my new Mexican wife at a dear friends house. It was New Years day and of course Haggis was served. She ate the hell out of it and liked it. She asked what it was? We all knew what it was except her. There was a great silence at the table and a few grins. I then told her.
I caught hell for this. :)