Court hears Stone aide's case that Mueller probe is invalid

Court hears Stone aide's case that Mueller probe is invalid
Attorney Paul Kamenar speaks to media as he leaves federal court in Washington, Thursday, Nov. 8, 2018. Judges on a federal appeals court heard arguments from Kamenar and are weighing whether to invalidate the Russia investigation over arguments made a former aide to longtime Trump confidante Roger Stone that the special counsel’s appointment was unconstitutional. (AP Photo/Carolyn Kaster)

WASHINGTON (AP) — A federal appeals court is weighing whether special counsel Robert Mueller’s appointment to lead the Russia investigation was constitutional.

At issue Thursday is whether Deputy Attorney General Rod Rosenstein had the authority to appoint Mueller.

The special counsel’s office says yes. But lawyers for a former aide to longtime Trump confidant Roger Stone say no. The aide, Andrew Miller, brought the case because he doesn’t want to testify before a grand jury as part of Mueller’s investigation into whether Donald Trump’s Republican campaign coordinated with Russia in 2016.

Mueller is focusing on Stone’s connection to WikiLeaks. American intelligence agencies have concluded that Russian agents were the source of damaging information on Democrat Hillary Clinton that WikiLeaks released during her 2016 presidential campaign against Trump.

Stone has denied any wrongdoing.