In it, but not of it. TPM DC
According to the Journal, the Chamber won't back a repeal despite calling the measure "very, very expensive."
From their piece:
But Donohue made it clear the chamber won't be spending any of its substantial war chest on a campaign, favored by Republicans, to repeal the legislation. The Washington-based chamber, which represents three million businesses of all sizes, spent heavily in an unsuccessful effort to kill the health bill. Minutes after Democrats won passage in the House Sunday night, the chamber issued a statement calling the vote "a wrong and unfortunate decision that ignores the will of the American people."
But once the bill becomes law, Donohue said, "If people want to try and repeal, let them. We're not going to spend any capital on that." Instead, he said the chamber will push for changes to the bill when it enters the regulatory stage, always a key pressure point.
In the 2,800-page bill "you've probably got 15,000 pages of regulation before this is finished," he said. "We have to see what we can do to deal with some of the issues that seem most egregious," and mount challenges in Congress and potentially in the courts, he said.