Its oil, that has been hydrogenated (adding hydrogen + high heat) meening its man made. It turns it semi solid or solid at room temp. If you have been a gallon of veg oil at room temp, its semi-clean and you can pour it. Then i am sure you have been a tub of crisco, its pure white. Its been hydrogenated.
The human body does not know how to brake down a hydrogenated oil. It ends up rejecting it and bypassing it into the blood stream. And it gets stuck all over your body and that how it can cause massive weight gain and higher blood presure, etc ...
I spent weeks in school reading about it
To make a long class real short, Mic D's used to fry their french frys in beef tallow. People starting throwing a bitch fit, so they went to ADM (same people who make biofuel) and asked them to make a cheap oil, that wont brake down as fast as pure vegi oil. So they hydrogenated it, and made oil shorting.
blah blah blah, in the end, we now have hydrogenated oils to fry the french frys in. However really is better for you to eat frys made in the beef tallow, then hydrogenated oil.
So the same people who pushed for hydrogenated oils are now trying to ban hydrogenated oils.