Count 1 - Obstruction of a Proceeding - 18 USC 1505 - Maximum of 5 years.
Count 2-6 - Statements or entries generally (False Statements) - 18 USC 1001(a)(2) -
Count 7 - Witness Tampering - 18 USC 1512(b)(1) Maximum of 20 years.
Hence, Stone faces a potential of 45 years in prison. Even if he sentenced to 1/4 of that time, its inherently a life sentence for him. X