I'm interested in the justification for this. The following link says about 25% of US GHG emissions are from coal, but coal burning makes up the vast majority GHG emissions for electricity production.
You are only looking at US emissions, not world emissions. The US is not the only country on Earth and its use of coal has been falling for some time now.
Oh, I was not aware the US is not the only country on Earth.
Snark aside, here's a source that says globally coal power production accounts for 30% of global CO2 emissions. That's a lot, but not quite the whole problem.