My apologies if this is weird or has been done before, but this idea just occurred to me, so I thought I'd post it.
Suppose Jor-El had built a spaceship big enough for him and Lara? And suppose Lara was pregnant when they left Krypton (or became pregnant later)?
Assuming that the spaceship still lands in Kansas (and they stay there, or someplace else in the U.S.), their son, Kal-El, would be born in the United States. Now, according to U.S. law, all children born in the United States are automatically citizens. The question is--would this still apply to the son of aliens? Kryptonians look human, they act human (aside from the superpowers), but whether or not they are actually human is debatable.
