As you are probably already aware, Irwin stopped manufacturing Vise Grip locking pliers in the USA a few years ago.
While I am actually quite pleased with the performance of some of Irwin’s newer Vise Grip pliers, most notably the ones with quick-release handles, I do prefer their older USA-made pliers over the newer imported traditional-style pliers.
Some of the older USA-made pliers are still available for purchase via various outlets, including Harry Epstein Co.
Harry Epstein recently added 7WR 7-inch curved jaw pliers to their closeouts catalog. They have a couple other USA-made Vise Grip locking pliers in stock as well.
More Styles(via Harry Epstein Co.)
New USA-made Vise Grip pliers, at least new old stock, are not impossible to find, but they are becoming harder to find. With increased scarcity, expect to see higher prices.