I like looming around old threads, Apparently that's kinda my style but, I'll chime in too.
I do applaud some companies for staying in the US, heck, I just got a grin when I opened a package of Scotch tape and saw the "Made in USA" Flag on the corner.
The problem with this pliers discussion though, I go to Walmart and I can get a pair of Stanley Diagonal and Needlenose pliers for ~$10, go to HFT and can get a similar pair for <$5. Both made in pacific rim, but the Stanley ARE, in fact, better.
I DO second the innovation perspective though. Did you know that the USA is one of the only countries that uses fixed-top table saws? Many other countries use tablesaws with a moving table to allow wood to be affixed to the table, THEN pushed through the blade. Try and finding that 'better' style table saw in the states. There just aren't out there en-masse.
I DO want to support states based companies BUT, they need to innovate. Look at the scads of people getting Knippex, Wiha, Wera drivers and pliers. ALL foreign companies, ALL about the same price as Pratt Read or Klein BUT, they are superior because those companies sell by innovation. Do I want a pair of Wera drivers? No, not really. I don't like the look but more, I don't think I'd like the feel, THAT is a sheer personal thing though. If I could afford it, yeah, I'd get a set of Pratt-Read square handle drivers but, that's preference for a US design (allbeit a bit dated)
Yes, there are great US made pliers, there are also lesser US made pliers, but there are also decent pacific rim ones. Channellock comes to mind for USA made (thanks guys who helped my decision in a previous discussion) BUT, you can get Knippex or Bahco foreign made products that are Superior...through innovation, quality, and service.