The Iowa caucus system is criticized for its lack of "chain of custody" for physical ballots and the potential for "nepotism and sabotage" by county chairs. The 2012 Ron Paul campaign is cited as an example where grassroots delegates were "bulldozed" by the establishment at the national convention. Rick Santorum and Mike Huckabee's involvement in the current cycle is also noted, particularly their attendance at Donald Trump's veterans' event.
