At 4:53 a.m. on Thursday, Hakeem Jeffries took his place at the lectern on the House floor, bound by no time limit, and began reading letters from constituents in Republican districts who have expressed fear of President Donald Trump’s signature tax and spending bill becoming law.

The Congressional Budget Office estimated that it will add $3.3 trillion to the deficit over the next ten years. Elon Musk, once Trump’s highest profile ally, has warned again in recent days that the legislation would send the country into “debt slavery.” He also threatened to fund primary challengers to Republicans who voted for the legislation.