I'll believe it when I see it.
For starters, I'm sure the government will STILL want to issue these new coins. So, let's suppose they come out with a $10 coin that contains 1/170th gold. Or even 1/200 of an ounce of gold.
Folks will immediately start hoarding the coins. Saving money is an anti-Keynesian practice that liberals claim harms the economy. So they'll scream bloody murder.
Next, suppose the price of gold rises... which it will. The hoarding of the coins will SKYROCKET. Folks will snap up these coins as quickly as the government can mint 'em. And where's the government supposed to get replacement gold from when it is effectively selling it at a loss??
How is government going to plant RFID chips in gold? I doubt RFID would be able to transmit through the metal - which means their plan to track all currency transactions will be dashed. And as soon as the price of gold makes it economical, people will start melting their coins down to extract the gold.
Finally, it's gold for cryin' out loud! How is government supposed to counterfeit it????? That's obviously not what the liberals will want.