Lawmakers by refusing to carry out new sanctions against russia that passed congress with broad bipartisan support. Tonight, new concerns that the administrations response was cut and run. We want to welcome our viewers to our special coverage. Im anderson cooper. Im wolf blitzer and you are in the situation room. We are following breaking news. President trump at the white house, preparing to deliver his first state of the Union Address as the russia investigation cast a long shadow over speech and administration. Tonight, a source tells cnn, it is a possibility mr. Trump may fire Robert Mueller despite warnings from members of his own party that it would spell the end of his presidency. Well hear from the president less than three hours from now. Ill interview Richard Blumenthal in the russia investigation. First, lets go to jim acosta. What are you learning . While the president is not expected to address the Russian Investigation in the state of the Union Address, he has grown incr