I admit I have not read the six pages posted on this, but the OP's allegations are incorrect on several fronts:
1. Many of the "foreign" cars on the list are made in the USA, and those that are not are still assembled in the US by US workers.
2. Ford and GM had much higher sales figures than the OP's list indicate, because they have numerous models of the same vehicle, such as 2wd vs 4wd, several different engine sizes, etc. The Govt. counts all these as separate vehicles, but if you add up all the different models, several US makes come out at the top of the list. Ford Escape and Ford Focus finish 1st and 2nd if you count all the variations as one model. The Honda Civic finishes 6th and the Toyota Corolla comes in at 9th, and are the only two foreign makes in the top ten.
3. Many of the parts made for all of the cars on the list are made by US workers at US owned companies, regardless of whether the car manufacturer is foreign or domestic.
Cash for clunkers was not meant to be a long-term solution. It was intended to get the auto industry through the worst of the recession. It seems to have done that, and the $3 billion spent on it was probably money better spent than the tens of billions thrown at various financial institutions.
It was not a ideal program, but I think it has worked out ok. There are a lot of people putting distorted information out there to support their own agendas.
Personally, I don't really care much about the program one way or the other ... but I've seen enough about the "news" that the program mostly benefitted Japanese manufacturers to know that it is BS.
http://money.cnn.com/2009/08/07/autos/cash_for_clunkers_sales/index.htm?cnn=yes
Just my $.02.
On a side note:
I've heard some dealers are not allowing customers to take possession of their new car until the government reimburses the dealer. If this has happened to you or someone you know, check out this FAQ from Edmonds that indicates that practice is illegal.
http://www.edmunds.com/cash-for-clunkers/faqs.html