WASHINGTON (AP) — Moving forward with a campaign pledge to unravel former President Barack Obama's sweeping plan to curb global warming, President Donald Trump will sign an executive order Tuesday that will suspend, rescind or flag for review more than a half-dozen measures in an effort to boost domestic energy production in the form of fossil fuels. The regulation, which was the former president's signature effort to curb carbon emissions, has been the subject of long-running legal challenges by Republican-led states and those who profit from burning oil, coal and gas. The overwhelming majority of peer-reviewed studies and climate scientists agree the planet is warming, mostly due to man-made sources, including carbon dioxide, methane, halocarbons and nitrogen oxide. The Obama administration, some Democratic-led states and environmental groups countered that it would spur thousands of clean-energy jobs and help the U.S.