WASHINGTON - Democratic senators are calling on President-elect Joe Biden to use executive power to advance goals such as tackling climate change, relieving student debt and creating a more progressive immigration system. The calls from senators reflect a recognition that Democratic lawmakers may not be able to pass a transformative legislative agenda after under-performing in congressional races. And unless Democrats win two Georgia Senate runoffs on Jan. 5, Biden will be the first president since 1989 to enter office without his party controlling both chambers of Congress. "The president-elect, beginning on January 20, should act as aggressively as possible to...