Pella Longhorn Duck Bomber [black]
(made in USA)
Pella's Longhorn Jacket - 818
For something lighter...
Carhartt Duck Detroit Jacket (aka the "Dearborn Jacket")
Union made in USA @:
Carhartt Duck Detroit Jacket Made in USA: All American Clothing Co
Unfortunately, it looks like they are currently out of the black, and only have brown.
Pella has them in black and moss green, but theirs are also more expensive:
Pella's Dearborn Jacket - 742
(made in USA)
Goodnighties Mens Wicking Sleep Tee Shirt
Goodnighties offers a line of sleepwear for both men and women that is not only very comfortable and made in America (I own one,) but is also fairly reasonably priced. Their products can also be bought from third party merchants on Amazon.
The places with the best prices on sweatpants made in the United States are All American Clothing Company, and Swami Sportswear.
Men's Open Bottom Sweatpant Made in USA: All American Clothing Co
Swami has them for less, and in a greater selection of colours, but BE WARNED
that my past experiences with their customer service weren't pleasant. They eventually sent me my stuff after about a month or two of wondering where my order was. There is no phone number on their website to contact them, and they never even replied to the messages I left on their contact form. Nonetheless, they DO have a good product. I'm kinda reluctant to do repeat business with them after that experience though.
Here's their website:
Swami Sportswear, custom sweatpants and women's fleece sweats, shorts and sweats made 100% in the USA.