WASHINGTON D.C. – President Trump on Friday will be the first sitting president to address the Values Voter Summit in Washington, D.C., a conservative group. It’s his third address to the annual gathering, but his first as president. One topic that may come up – the ending of Obamacare subsidies to insurers. Late Thursday night, the White House dealt a major blow to the Affordable Care Act (ACA) with an announcement that it would end insurer subsidy payments that help make insurance more affordable for lower-income families. Mr. Trump will be making his first public remarks since that announcement. He could also give attendees a preview of his Iran strategy. Soon after his address to the summit, the president is expected to refuse to certify that Iran is complying with the landmark nuclear agreement with Iran, CBS News’ Margaret Brennan reports. He’ll also announce sanctions on members of Iran’s Revolutionary Guard and say that the Iran nuclear deal is no longer in America’s best interest, and the president will call on Congress and the secretary of State to fix the deal. The Values Voter summit aims to mobilize religious conservatives around issues like traditional marriage, religious liberty, and opposition to abortion. Also addressing the group of several thousand Friday are House Majority Whip Steve Scalise, Alabama GOP Senate nominee Roy Moore, and White House Counselor Kellyanne Conway. On Saturday, the group will hear from former chief White House strategist Steve Bannon.