DickiesMen's Dri-tech Moisture Control Max Full Cushion Crew Socks, Available in M-XL (6, 12 Pairs)

Are these made in the USA?

Why is this listed under "made in usa products only".

Do they come Size 13?

I only received 5 pairs of socks instead of 6. The package is already ripped open... how do I get another pair sent?