The House and Senate are set to leave Washington, D.C., for a month-long summer break. But they are leaving behind unfinished business.

When lawmakers return in September, they will have little time to tackle legislative priorities like the Iran nuclear deal, transportation funding and the debt ceiling.

However, the major fight could be over Planned Parenthood’s federal funding—possibly leading to another government shutdown.

Watch the video above to learn more why these 11th-hour issues will test the ability of congressional leaders to avoid a government shutdown.