Jonathan Houweling from Langley, B.C. is banned for life from entering the U.S. after a border agent discovered a forgotten old bottle of CBD oil in his car. ⁠ ⁠ Despite cannabis being legal in Washington state, the borders are federally regulated, making the sale, possession and distribution of marijuana illegal.⁠ ⁠ CBD oil is not a controlled substance in the U.S., as long as it contains less than 0.3 per cent THC — the principal psychoactive compound found in marijuana.⁠ ⁠ Houweling says an a