Law, in ideal, takes the form of a series of statutes in writing, which theoretically reflect the will and intention of the body of people with whom they have authority. In practice, law is an aggregate result of how the people within a legal state behave, and which actions they either condone or condemn.
If the law is to be a body of work representing the people, as is mandated in the U.S. constitution, it must be upheld by all people. It is the responsibility of all, within the power of influence they possess, to enforce the law to the best of their understanding (and to further that understanding to the greatest extent possible within their means).
In that regard, I must today attest, that capturing a foreign head of state of a country with which the United States is not at war, is a crime. This is true regardless of specific statutes, because it contradicts the will of the populace, but it is also prohibited under our protocols of war. Any cooperation with or support for the endeavor to undermine and demolish the sovereignty of an external nation is likewise a crime.