The US has built 3(or more if you count those just at research and not commercial scale) reprocessing facilities but they were mothballed. Savannah river is still active but only processes a small amount for scientific research. So these facilities operate and/or exist and can restart with little money, time or effort. We literally have the infrastructure already and have run it successfully for decades, we just chose to turn it off. Alternatively we could ship to friendly nations such as UK, Japan, France, etc where they have active facilities.