Louisiana Rep. Garret Graves, the ranking Republican on a new House panel to address climate change, rejected the idea of a carbon tax as a lever to lower greenhouse gas emissions.

In a March 1 interview with Bloomberg Environment, Graves said pricing carbon isn’t “the right approach right now” to reduce emissions. Graves was named ranking member Feb. 28 of the House Select Committee on the Climate Crisis.

“It’s more of a stick-type monetary incentive, whereas I think...