Sorry, can't read the article, paywall. Mind giving a quick rundown?
This is just based on what you said, and you might clarify afterwards. But I find it weird that palm oil planting was US led. They're only 6th in import: http://www.worldstopexports.com/palm-oil-imports-by-country/
I would imagine china or india being bigger driving forces in clear cutting forests for palm oil planting.