President Donald Trump has repeatedly said that his administration has “cut by 97% the flow of illegal drugs entering the U.S. by water, by ocean, and sea.” But available federal data do not support that claim.
There is no comprehensive data on the total amount of drugs trafficked to the U.S., including how much authorities don’t capture. Without that information, drug policy experts have told us that it’s not possible to know if the president’s claim is accurate.
“[W]e do not know the true amount of drugs coming into the country because we don’t know the amount that comes in undetected (the known unknown),” Katharine Harris, a fellow in drug policy at Rice University’s Baker Institute for Public Policy, told us in an email.
She said the amount of drugs “seized” — which is what the federal government reports — is not equivalent to total drug “flow.”


