Not relevant. The article points out that he worked in the energy dept under GHW Bush and GHW Bush signed the global warming treaty and the senate ratified it.
He wasn't relevant then and he is not relevant now.
All over the USA and all over the world renewable energy is gradually replacing fossil fuel. Every nation in the world signed the COP21 in Paris in 2015.
“Every nation in the world signed the COP21 in Paris in 2015.”
A very scientific argument. Which of these nations managed to lower emissions?