For some reason or other, it didn't.
You may recall that not only does Norway harvest seals, but it also has a whale hunt. How that isn't impacted by U.S. policy and acts is something.... I expect that either the U.S. worked out a bilateral agreement with Norway or that the U.S. has an understanding that if there is a proper stock status established, based on methodologies, it meets a standard that would enable imports of fish products, notwithstanding a seal and whale hunt.