First, it is a mistake not discovered until later inspection and properly "closing" it really demands you unravel the thing and re-do that loop.
If there is a political "loophole" it is because someone deems something was inproperly done before, even after inspection.
Using the word "loophole" is a devious thought pattern.
Agreed and Republicans are as bad as the rest in using the term.
Substitute ‘remaining freedom they haven’t stamped out’ and the picture changes quickly.
A loophole is also a small window in a wall, used to shoot arrows or bullets through. Closing it prevents the enemy from doing the same.