Personally, I'm very relieved, and I hope that the Dolphin players follow suit, and that there is NO disrespect from them either.
Vote Trump!
Read 36 USC Section 301.
It’s actually codified law that you put your hand over your heart.
Unenforceable, as there are no penalties associated, but, it is federal law.
https://www.law.cornell.edu/uscode/text/36/301