Such as keeping First Solar and SunPower in business (FSLR has lost 95% of its value).
The jobs created through installation, maintainence, R&D, manufacturing, and so on.
For example: let's say your import cost is $250 billion, but your domestic cost is $300 billion. I'd argue that you're radically better off spending the $300 billion domestically, than losing the jobs likely involved and exporting $250 billion off shore to benefit some other nation/s. There's no doubt some inflection point on that benefit, but I think it's a wide margin.
They essentially loaned you the oil - and if they ask fro the money back you can just democratize them.
"America is still the world's largest importer of crude oil. From January to October, the country imported 2.7 billion barrels of oil worth roughly $280 billion."
"Fuel exports, worth an estimated $88 billion in 2011 ..."
http://www.usatoday.com/money/industries/energy/story/2011-1...
From what I could find, we export around $30x billion worth of plastic per year, and import around $12 to $15 billion worth of plastics.