Answer: perfectly consistent with Madison's proposed national veto over objectionable state laws
Step-by-step explanation:
James Madison believed that the Federal Government through Congress, should have the right to veto objectionable state laws so that states would not get away with doing whatever they want in areas the Constitution was lacking.
The action by the 1965 Voting Rights Act described above is in line with this veto suggestion because it was passed mainly with the Southern States as these states had been limiting the rights of Black people to vote through some state legislature and intimidation. Justice officers being allowed to go into communities to register voters was to counteract this.