When I send an invoice to Harlan Crow after each decision, we leave a space at the bottom for optional gratuities. He's not forced to do anything, but we always appreciate it when he does
Nice deck-stacking by the Supreme Court majority here: "While American law generally treats bribes as inherently corrupt and unlawful, the law’s treatment of gratuities is more nuanced. Some gratuities might be innocuous, and others may raise ethical and appearance concerns."