This might not be completely true, but I was told by a former cop that technically anything obscuring the driver’s view through the windshield is something they can use against you. Hanging air fresheners, bobble heads, a mounted dash cam… it’s just one of those things that isn’t usually enforced.
I feel like this is a joke that whooshed right over people’s heads. It’s a reference to how Trump tries to distance himself from people who were actually close to him, right?