Donald Trump signed an executive order mandating that the USPS only deliver mail-in ballots to voters verified on a new federal citizenship list.The directive requires the DHS to create these registries using SSA data and threatens to withhold federal funds from non-compliant states.This mandate also requires ballot envelopes to feature unique barcodes for tracking and official markings to verify the eligibility of the sender.Critics and legal experts have condemned the move as an unconstitutional overreach that ignores the traditional state-level control of elections.