Photo taken in Arlington, Virginia, the United States, Aug. 24, 2020 shows a computer screen displaying U.S. Vice President Mike Pence speaking during the 2020 Republican National Convention in Charlotte, North Carolina. (Photo by (Xinhua/Liu Jie via LAS VEGAS (AP) - Vice President Mike Pence will deliver the marquee speech Wednesday night at the Republican convention, making the case for another four years for President Donald Trump and laying the foundation for his own potential White House run in 2024.Pence, whose future political aspirations could hinge on November, has campaigned aggressively for the president.