There is no difference. People often complain during the pandemic that the San Francisco police department has seemingly instituted a "discretionary" policy that makes it de facto legal to violate traffic law at scale, you know, including speeding, not stopping at stop signs, not yielding to pedestrians. https://www.reddit.com/r/sanfrancisco/comments/11nbnxw/san_f...
Maybe you are misunderstanding. A single cop deciding "okay today I'm letting you off with a warning" is quite different from the President directing the entire Federal bureaucracy to not enforce existing immigration law. If for some reason a large jurisdiction, say maybe the state of California, decided that it was policy to let everyone off with a warning for speeding infractions, then, if I squint hard enough and ignore a wide range of second and third order effects, then yeah maybe they are similar.