The letter — signed by Health and Human Services Secretary Kathleen Sebelius, Labor Secretary Hilda Solis and Treasury Secretary Tim Geithner — laid out the consequences of the law being repealed.

“If the Affordable Care Act were repealed as some have proposed, the individuals we have heard from plus the millions of families, seniors, other individuals, and small businesses already helped would lose this support and these protections,” the letter said.

“We urge you to consider all that this law has already done to improve the health and financial security of so many Americans and what it will mean to hundreds of millions of more in the next several years as you evaluate any proposal that would set the Nation back on a path to higher costs and skyrocketing premiums, less competition, and fewer consumer protections against industry abuses.”