Answer is could be!! Wow you say is not that is not objective !! Another guy say "yes it is she was a child".
Now if the Constitution did not define what age a person ceases being a child and becomes an adult then the Constitution is subject to interpretation.
Another example: Let us say that the Constituion said "Thou shalt not kill".
A Quaker refuses to go into the military becasue his religion opposes killing and in the military you may have to kill.
The attorney for the the Quaker said your honor Mr. Judge Sir the Constitution has an objective law in it and it says "Thou shalt not kill" therefore my client is witin the law to refuse to go into the military.
The Judge with all his God given wisdom say no councelor you have not interpreted the Constitution correctly that sentence means that it is againsy the law to kill civilians and it is fine to kill other military people especially foreigner. You client in guilty of disopbeying the law and I am sentencein him to death by hanging from his Socialist neck until he dies for being unpatriotic and refusing to serve.