Today on Boston Public Radio:  M.I.T. economist Jonathan Gruber talks about what an expanded stimulus relief package might look like with Democrats in control of the Senate. He also responds to listener questions about what’s in the latest $900 billion package, passed in December. Next, we open lines to talk with callers about the Republicans challenging President-elect Biden’s win, and get your thought on the legacy of Trumpism in American politics.  CNN analyst Juliette Kayyem discusses the state of President-elect Joe Biden’s transition to the White House, and the Trump supporters gathering in Washington to contest Congress’ certification of Biden's Electoral College win on Wednesday. Medical ethicist Art Caplan breaks down the latest news on the distribution of COVID-19 vaccines in the U.S., and questions around who ought to have vaccine priority. Next, we open lines to callers, returning to the discussion about resistance to President-elect Joe Biden’s November win.  Angell Animal Medical Center’s Dr. Virginia Sinnott-Stutzman joins us for an inaugural edition of “Ask the Vet,” talking about pet care during the pandemic and responding to listener questions.