As a practical matter, indicting a president is impractical without bulletproof evidence of a heinous crime. That being said, should a rouge prosecutor file charges, and the lawyer be fired for doing so, you can bet impeachment would go forward for obstruction of justice.
Please don’t keep trying to make “legal” sense of this.
SDNY will indict, says Andy McCarthy. Even if it’s an “unindicted co-conspirator,” it will be enough to trigger impeachment. That’s the goal, not an actual, “legal” crime.