I totally understand and agree 120%. I, too, try to buy local (I'm in Canada) as much as I can. But it's not making any difference.
It's just that for most mass market goods, local is not an option anymore (niche and "long tail" markets are perfect for local goods and specialized manufacturing, on the other hand - but that is another discussion). Clothes, electronics, usual home objects, all would not be affordable to the mainstream person if manufactured in North America.
Not to start a rant (oh, shoot, I just did), but I believe that the fault lies not with the Chinese or other countries (that is pure demagogy to transpose the blame onto foreign entities directly - even if that wins votes) but the culprits are the companies and corporations that have put profit at the top of their priorities, regardless of the impacts on their respective cities, states, countries. In the 50's, until the 70's, social and local impacts were still being considered in priority when making manufacturing decisions; that was true even by big corporations such as GE and GM - they felt a responsibility to their local communities, cities, etc. Not so much anymore. 80's corporate greed buried those priorities.
If companies of all sizes in the so-called first world considered the local social impacts of delocalization of production in labor intensive industries, and that some would still elect to keep their production in-shore - while relying on technological advancement to keep costs relatively competitive with cheap labor countries -, I believe our first world countries would still have balanced and thriving manufacturing sectors.
But unfortunately most companies and corporations today choose to send their manufacturing elsewhere to save on labor, avoid capital expenditures (i.e. avoid having to make investments aimed at technological advancements - which itself creates more jobs and social wealth) and choose to solely focus on maximizing their benefits and hoarding their cash flows, at the expense of everything else (including their workers, and the environment).
You and I can buy local all we want, but it's hard to fight that type of capitalism with our little local purchases. This has to be a society-wide desire to change, to start with those who publicly rage against delocalization while themselves massively sending manufacturing overseas **cough cough Trump clothes made in China**...
/End of Rant