I don't think it's laughable, I mean our economy is crap right now because of those purchases outside of the US, not saying I never purchase something because of where it was made but if I had an option I would hope to get something from the US at a comparable price.
Common misconception that any general economics class will disprove. Imports actually stimulate the economy. The loss of jobs you see aren't from people who purchase foreign products. Quite the contrary at times seeing as how a lot of these foreign brands have plants here in America that assemble the products. That means Americans are employed there, granted a lot are transfers from the home country of the company. Prime example is Mitsubishi. They've had a plant here in America for the longest time. Honda recently came here as well.
Want to know what the real evil is? Outsourcing/off-shoring. While some companies genuinely have to outsource to keep up with their competition (how else can you save large amounts of money in order to charge dirt cheap prices?) like Levis, a lot do it purely to fatten the wallets of top execs. This is a very bad practice. And to be honest, some companies such as Levis outsource the right way. They offered severance pay and free training for their workers to aid in improving their skills so they are more marketable for other fields of work.
If you want affordable products, this practice is needed. You can't have your cake and eat it too. Sorry about my rant, but I absolutely hate when people spread this type of misinformation. I'm all for buying American, but my reasons are very different from yours. I don't do so because I think I'm saving jobs that way, I do it for the quality.
So the better argument would be, "You want better quality? Then buy American." Although we all know that not all American made products are quality just like not all foreign products are. Even then, companies like the Big 3 automakers have plants all over the world so it isn't 100% American which is why I laugh whenever I see that stupid bumper sticker, "Out of a job yet? Keep buying foreign" slapped on one of their automobiles. Especially when they are on the Mazda 3 based Ford Focus.
Misinformation creates misconception.