Anyone wondering why Democrats fared better than expected in the midterms should direct their attention to President Joe Biden's recent string of legislative victories.These accomplishments helped Democrats win crucial votes in key states and maintain control of the Senate. But if they want to hold onto the White House, it's important that President Biden and congressional Democrats avoid any policy stumbles before 2024.One such stumble would be the president and his allies throwing their support behind the World Trade Organization's proposal to waive intellectual property protections on therapeutics and tests related to Covid-19. It would allow our global competitors -- ...