Stephen Vladeck, a University of Texas law professor, said Trump would need to take different steps to halt the probe. He could give the order to Rosenstein and fire him if he does not comply, Vladeck said, or Trump could try to replace Sessions with someone who does not have a conflict of interest, allowing that person to order Rosenstein to shutter Mueller's investigation.

Source: Los Angeles Times August 01, 2018 17:26 UTC