Now, we are also seeing similar decline in science knowledge among high school students.
The rise of temporary worker visas in the US has been accompanied by significant educational decline by a variety of measures.
The reason is really quite simple: scientific and technical professions are more subject to direct competition from foreigners via immigration compared to other occupations. Real Estate Salesmen, CPA`s, Lawyers, stockbrokers all have some very well paid practitioners - but none of these occupations have a special visa classification aimed at enabling foreigners able to get jobs in the US to do so.
The US`s leading competitors in technical areas include countries like Japan and South Korea with virtually no immigration, high education levels, large trade surpluses - and which lack the natural resource base the US has.
The US needs to cease this failed strategy and look elsewhere for a solution.