Buying rhizomes from a US supplier will probably require some kind of import certificate. Most suppliers won't bother. I know Freshops does, but it's $20 USD.
Hops do not breed true, so seeds could give you odd results. Plus, half of the plants would be male.
Remember one unassailable statistic, as explained by the late, great George Carlin: "Just think of how stupid the average person is, and then realize half of them are even stupider!"
"I would like to die on Mars, just not on impact." Elon Musk