Don't know how much time they got, but laws against transporting water hyacinths across state lines make a lot of sense.
But does removing such an offender from the productive ranks of society and incarcerating them at great expense make sense? Is there not a better way to punish this crime than making someone a ward of the state where they have to be housed and fed on the taxpayers' dime?
Don't get me wrong, I'm not arguing against prisons. Prisons are effective at protecting society from those classes of criminals who threaten our life and liberty. But the idea that every broken law merits prison sentences, and increasingly long ones, is archaic, expensive and counterproductive to society, unless of course one is in the business of building prisons. There's plenty of other ways to punish non-violent criminals without locking them up that would better serve society.