If Obama was born in Hawaii, the issue of the citizenship of his mother is not relevant because he would be a citizen by birth. But the law cited in the eRumor about having just one parent with U.S. citizenship applied to persons born outside of the United States (or specified U.S. territories).
The difference is relatively minor. Pork tenderloin is more tender as the name implies. Pork tenderloin lends itself to quicker cooking and is best seared and then sautÃ©ed . Pork loin is also a lean cut and is more versatile,in that it can be cut into cutlets, breaded, and pan-fried. It can also be slow-roasted.
If put into beef terms, the tenderloin would be the filet, and pork loin would be like the strip. Teo completely different things. The tenderloin will be more tender and leaner, the loin a bit tougher, a bit fattier, but more flavorful, I think.