Former Presidents Obama, Clinton and Bush have arrived at the inauguration ceremony at the US Capitol. Follow the latest updates: cnn.it/360yrzk | CNN

Former President Barack Obama says, "We have to worry when one of our major political parties is willing to embrace a way of thinking about our democracy that would be unrecognizable and unacceptable even five years ago or a decade ago." https://cnn.it/2Rxlv01 | CNN

Former President Barack Obama says he is "So proud to endorse Joe Biden for President of the United States" in 11-minute video message https://cnn.it/2z3J86V | CNN