Originally Posted by
alanR
Why is cash such a threat. AFAIK it's still legal to carry to carry cash in the US.
Its not a threat. And yes, you can travel all over the US with as much as you like. Its when one is traveling outside of the US that the concerns start. One must declare sums of cash equal to or larger than $10,000 with Customs. If you have done so then there is no problem.