Could be similar to those "are you or have you ever been in a terrorist organization" forms you sign when traveling to the US. Create a law that makes it illega

Could be similar to those "are you or have you ever been in a terrorist organization" forms you sign when traveling to the US. Create a law that makes it illegal to lie on that question and then it's often easier to arrest/deport people for lying on a form (or to an officer) than to convict them of a bigger offense.