Quote from achilles28:
"Lawful money" is defined by legal precedent as only federal reserve notes. Competing currencies is an idea put forth by Ron Paul, which legalizes alternative currencies to fiat, federal reserve notes. It could be silver and gold-backed notes. It could be commodity-back money (oil/cattle/grains etc). It could be time-value notes, where laborers trade their own time in lieu of payment. It could be something nobody has thought of, but the market later accepts and runs with it. The Feds shut-down E-gold and Liberty Dollars because they intend to suppress the movement towards alternative currencies. If left to take root, commodity-backed money would spread like wild fire. The basis of Government and Banking power is seniorage, which implies 1) a fiat currency and 2) the general economy using that fiat currency in all transactions. If we move to an alternative currency, something that can't be counterfeited, both the Government and Bankers would lose their counterfeiting monopoly ("monetization" and "loan creation"), which would erase the massive power they hold over the nation. It's all academic, but it's an age-old battle that's raged on for thousands of years.