The courts will accept a hell of a lot, due to Chevron deference. Statutes will use a term (eg, "readily convertible" or "replica"), and the administrative agency will decide this term means different things depending on the day of the week and which party is in power. All it has to be is "plausible", not consistent, and the courts will defer to their interpretation.

https://en.wikipedia.org/wiki/Chevron_U.S.A.,_Inc._v._Natura....