President Obama signed a small but significant bill this week that rolls back a requirement in his signature health law, the Affordable Care Act. Last week, Congress voted on bipartisan lines to repeal a small group insurance markets rule that was slated to go into effect in 2016. Many business groups said that without the change, premiums would have gone up for millions of workers.

Enactment of the bill was a small victory for Obamacare critics, but it could also pave the way for new, piecemeal approach to repealing Obamacare.