The public’s approval of Obamacare has dipped in a latest Gallup poll after hitting record highs in April.

Gallup said on Monday that 50 percent of people asked approve of the healthcare law, down from 55 percent in April and 53 percent in July. The decrease comes as the Senate is expected to consider a tax reform bill as early as this week that includes a repeal of Obamacare’s individual mandate tax penalty.