Just don’t travel with too much of it. If you’re stopped with a lot of cash the government uses loopholes to seize it. It will be up to you to prove you’re not up to no good with it to get it back.Our government using in "Emergency" situation as a guise to pass legislation that hurts the American people in a way TOTALLY UNRELATED to the emergency itself? You don'y say???
And yes, use cash. Keep cash alive. It's critical for your privacy and freedom.