In Search Of: T-Shirt

You may not comment regularly on this blog, but I'm hoping that some of you who stop by here might take a moment and help me in my search if you can.

I'm looking for the 100% cotton go-to t-shirt.  My primary parameters are as follows:
1) Made in the US or Canada in sweatshop-free/ethical working conditions*
2) Good construction & fit
3) Medium to lightweight fabric

Other things I'm interested in are price (it's a staple, not a special occasion luxury item) and whether organic cotton is an option.  I'm sure I'm forgetting something, but that's all I can think of now.  If you know of any manufacturers/designers who fit this bill, please let me know by leaving a comment.

*Yes, American Apparel is the first and obvious choice; however, I find their ads skeevy.  My son calls them Anorexic Apparel, and I have to say - I see his point.