NEW YORK (CNNMoney) — A growing number of states are seeking shiny new currencies made of silver and gold.

Worried that the Federal Reserve and the U.S. dollar are on the brink of collapse, lawmakers from 13 states, including Minnesota, Tennessee, Iowa, South Carolina and Georgia, are seeking approval from their state governments to either issue their own alternative currency or explore it as an option. Just three years ago, only three states had similar proposals in place.