Video cameras are necessary for court evidence.
But more is needed.
US Marshals and/or their deputies and deputized volunteers need to be placed in all receiving and counting rooms, and voting booths to prevent voter and monitor ‘intimidation’.
BUT... Every election cycle thousands of all democrat ballots (probably in alphabetical order) are “found” in the trunks of cars that were supposedly not previously counted. Wherever those votes were supposed to come from should be surveilled as well.