When the USA Hockey Board of Directors ratified the Declaration of Safety, Fair Play and Respect in June of 2019 its intent was to create a culture that eliminates: 1) hits to the head, 2) hits from behind and 3) late hits.
The onus on modifying the culture lies with everyone in the game, from players, coaches, and officials to media, parents, fans and administrators.
Link to Full USA Hockey Declaration
Link to Video with Examples, etc.
While the focus of the Declaration is largely around changing the culture and mindset involved with body checking, there is also language that deals with unsportsmanlike conduct centered around banging on the boards to celebrate a body check.
It should be noted that USA Hockey supports legal body contact and body checking. The culture shift is an on-going effort to eliminate 1) hits from behind, 2) late hits and 3) hits to the head by more clearly defining body checking and putting forward clear examples of what is acceptable and unacceptable.