It is true that the king was always in the Roman commonwealth subject, and not superior, to the law; but, as according to the Roman view the supreme judge could not be prosecuted at his own bar, the king might doubtless have committed a crime, but there was for him no tribunal and no punishment.

The consul, again, if he had committed murder or treason, was protected by his office, but only so long as it lasted; on his retirement he was liable to the ordinary penal jurisdiction like any other burgess.
To these leading changes, affecting the principles of the constitution, other restrictions were added of a subordinate and more external character, some of which nevertheless produced a deep effect The privilege of the king to have his fields tilled by task-work of the burgesses, and the special relation of clientship in which the -- metoeci-- as a body must have stood to the king, ceased of themselves with the life tenure of the office.
Right of Appeal Hitherto in criminal processes as well as in fines and corporal punishments it had been the province of the king not only to investigate and decide the cause, but also to decide whether the person found guilty should or should not be allowed to appeal for pardon.

The Valerian law now (in 245) enacted that the consul must allow the appeal of the condemned, where sentence of capital or corporal punishment had been pronounced otherwise than by martial law--a regulation which by a later law (of uncertain date, but passed before 303) was extended to heavy fines.

In token of this right of appeal, when the consul appeared in the capacity of judge and not of general, the consular lictors laid aside the axes which they had previously carried by virtue of the penal jurisdiction belonging to their master.

The law however threatened the magistrate, who did not allow due course to the -provocatio-, with no other penalty than infamy--which, as matters then stood, was essentially nothing but a moral stain, and at the utmost only had the effect of disqualifying the infamous person from giving testimony.