According to this the carbon is made in the USA but I wouldn't think the hubs are:

https://enve.com/.../u-s-made-by-choice/

ENVE proudly manufactures 100% of our carbon fiber wheel products in Ogden, Utah. When we first started, we thought we had to move our manufacturing overseas to be competitive. After a lot of sleepless nights, we made the hard decision to design and manufacture our rims in the U.S. instead of outsourcing them.

Edit:
http://www.cyclingnews.com/...new-carbon-facility/

Enve does their carbon fabrication in house, HED is the same way. I am fairly certian that HED hubs and aluminum rims are not made in house.

We (HED) do all our carbon fabrication in house.
Not the aluminum rims or hubs - yet. We do a LOT of machining in house on the Black rims to get the brake surface on them.

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Andy Tetmeyer (I work at HED)

Wheels are America. Everything else is China.

Wheels, carbon road hubs and mtb stems are made in Ogden.

My ENVE rims were built up by hand by Wheel builder in the as U.S.

Having been in their factory in Ogden... It's made here.

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Train hard to Race harder

"To give anything less than your best is to sacrifice the gift" - Pre