MATTINGLY: Topping our political radar today, Joe Arpaio wants his old job back. The former Arizona sheriff and ardent Trump supporter says he's running to "Make Maricopa County safe again." Arpaio known for cracking down on illegal immigrations served 24 years before being voted out in 2016. And this, he was convicted of criminal contempt for making immigration arrests after a court ordered him to stop, but President Trump pardoned him before he was sentenced. And a source says the House Judiciary Committee is subpoenaing former White House Staff Secretary Rob Porter. Porter was a key witness in Robert Mueller's investigation into possible obstruction by the President. He would be the sixth Trump aide subpoenaed by the Democrat-run committee. The White House would almost certainly try to block him from testifying. And Republican Congressman Sean Duffy just announced he's resigning effective September 23rd. The Wisconsin lawmaker says he loves serving in Congress but he and his wife are expecting a child that will need extra love and attention due to medical complications. Our thoughts and prayers with the Duffy family on that one. And Supreme Court Justice Ruth Bader Ginsburg is speaking publicly for the first time since being treated for pancreatic cancer earlier this month. The 86-year-old spoke last hour after receiving an honorary degree at the University of Buffalo-School of Law. She acknowledged the elephant in the room, her health, which is a subject of keen public interest. Justice Ginsburg is now had four bouts of cancer and she told the audience that her health problems didn't stop her from appearing. And up next, the scramble to make the Democratic debate, remember, you can tweet us your questions using #insidepolitics. We are going to answer them. We'll be right back.
Judiciary Committee Expected To Subpoena Rob Porter; GOP Congressman Sean Duffy Resigning For Family Reasons; Justice Ginsburg Speaks Amid News Of Pancreatic Cancer Treatment