The full quote is

> This historic, first-of-its kind achievement will provide unprecedented capability to support NNSA’s Stockpile Stewardship Program and will provide invaluable insights into the prospects of clean fusion energy, which would be a game-changer for efforts to achieve President Biden’s goal of a net-zero carbon economy.

That is his administration's goal, and it's the directive that DoE is working under during his presidency.

Unless you have another party in mind that's been vocally championing a net-zero carbon economy?