Chief Justice John Roberts is on a collision course with Donald Trump as the president increasingly tests the limits of the judiciary’s role as the most prominent backstop to his administration’s

John Roberts, the Supreme Court's conservative chief justice, appeared to denounce Donald Trump's calls to impeach a federal judge who ruled against the administration in an unusual public statement

For two of the most powerful men in the United States, Donald Trump and John Roberts, it has been a delicate dance from the start.