[xg15]

From your very own linked Wikipedia page:

> In 2010 the International Panel on Fissile Materials said "After six decades and the expenditure of the equivalent of tens of billions of dollars, the promise of breeder reactors remains largely unfulfilled and efforts to commercialize them have been steadily cut back in most countries".

[ars]

Like many energy things, this is a money question, not a technology question. (There are functioning breeder reactors today, but they cost more.)

If it was important enough we could do it. The government could also mandate it, and we could feed them all the existing nuclear waste.