There are only as many wildlife law enforcement officers inspecting incoming cargo for illegal wildlife products like ivory, rhino horns, etc. as there were 30 years ago. In that time period the illegal wildlife trade has swelled into a multi-billion dollar criminal enterprise on the scale of the drug and illegal weapons trades.
Overwhelmed U.S. port inspectors unable to keep up with illegal wildlife trade - The Washington Post
Overwhelmed U.S. port inspectors unable to keep up with illegal wildlife trade - The Washington Post