True, those are some very big and very real concerns. Overpopulation and whatnot...
But I couldn't morally agree with someone having to past tests of some sort to hold their natural right to bear children.
Plus, for the sake of discussion, what sort of test would people have to pass? Who would fund it? How would you administrate it to the entire population (of even one country)? And what if they failed the test and didn't get certified to bear children: Would you sterilize people? That opens up a new debate all together.
*Suddenly wishes Jacob was here*
