They are not the biggest, but Haas has been increasing sales every
year- and 40% of their sales are exports, much of it to China.
There are a couple of hundred companies left in the USA that make
various sorts of machine tools- but almost none make manual lathes or
mills-
Bridgeport, owned by Hardinge, makes mills here, and they say they will
make you an HLV- if you have 60 grand or so. Monarch mostly repairs and
rebuilds.
Ingersoll Rand is owned by an Italian family, but they still build big
machines to order.
A variety of other specialty companies make ironworkers, bandsaws,
grinders, sanders, presses, lasers, and so on.
Welders are still made here by Lincoln, Miller, and Esab.

There sure arent as many manufacturers as there used to be, and a lot
of low end stuff comes from china, and high end stuff from europe or
japan. But there still is some stuff made here.