Thanks for the link, Peg. This is definitely one to watch. I know it's been stated elsewhere but it's important enough to repeat... NOW is the time to spin-up our defenses.
Join the NRA if you're not already a member. If you are a member then consider upgrading your membership. Also consider other organizations such as the Second Amendment Foundation (SAF) and the related Citizens Committee for the Right to Keep and Bear Arms (CCRKBA). Make regular contributions to your organizations. Learn all of your state and federal legislators' phone numbers, fax numbers, email addresses, and mailing addresses. Sign up for email newsletters from your state and federal circuit courts as well as the SCOTUS.
Make a list of proposed and introduced gun bills as you learn of them - both anti-gun AND pro-gun bills. When appropriate, contact the legislators involved and ask for their action on these bills. Track the status of these bills and as they move from one committee to another contact the members of that committee and express your position. And don't forget to thank legislators when they defend the 2A... they need to know that we are watching and that we appreciate their efforts.
This is a lot of work but this is how we fight back against the relentless assault on the 2A that this administration has already started. We've survived conditions like this before (remember Clinton, Reno, et al) and we will survive this time. We can fight longer, harder, smarter, and with greater passion than they can because we are fighting to preserve our very way of life.
Start now... do SOMETHING every day to fight this war. Make a phone call, write a letter, check the status of a bill, post something you've learned to this forum, do something EVERY DAY. The enemy will never rest so we must never rest.