More than a month after their initial social media bluster, Elon Musk has announced the formation of a new U.S. political party in response to U.S. President Donald Trump signing his sweeping tax and spending bill into law.

Elon Musk has said that he’s formed a new political party, but it’s unclear what steps — if any — he’s taken to do so, or how the effort might affect upcoming elections. Musk has not yet released any additional information. Spokespeople for Musk and his political action committee, America PAC, didn’t immediately comment Monday.

Elon Musk said he’s launching a new political party, following through with his threat to challenge the two-party system after President Trump signed the “big, beautiful bill.”