I like the mechanics behind the American constitution.
If you don't like a part of it you can create an amendment. But that amendment needs 2/3rds support in Congress and the Senate and 38 states to ratify it, so no one group has control.
The idea that a pregnant woman from Guatemala can sprint across the US border, have the baby 30 minutes after arriving here, and the baby is magically a citizen of the US, is one of the most retarded and indefensible notions ever conceived