When you cannot achieve an objective and your efforts are likely to have negative consequences, yes.
"securing the border" won't keep illegals out. It will however drive them to more drastic measures and increase the payday for coyotes(people smugglers)
likewise
Drug testing recipients of gov aide won't slow drug use. It may lead to children of drug addicts getting fed less, or peeing in a cup for daddy.
Good intentions don't necessarily create good results.
True. It doing nothing is a shifty answer. Fight the good fight.