It took great effort to get crypto even recognized under the first amendment -- the USGov kept insisting that source code was not speech. In the 1990s it was against the law to let foreign nationals have access to the source code to DES. If you had folks from overseas in your organization, technically you couldn't let them see the source for crypto in your product (e.g., you had to wall off pieces of your repositories, and many companies did).
We could see a return to this. Don't take it for granted.
https://www.wired.com/2000/08/court-to-address-decss-t-shirt...
That said, up to the mid 90s it was theoretically against the law to show a foreign national a printed-out copy of DES. Crazy. I think it was published in magazines . . .
I'm expecting something like, "Yeah, sure you can have your 1st amendment, you just have to give us the keys if we ask or you get charged with destroying evidence/obstruction of justice which together carry more time than almost whatever possible illegal activity your encrypted traffic could have been concealing.
I expect that will come under attack, but it's a very fundamental part of US law used unambiguously. So we might also see civil war 2 before they get that legally changed.