Both source videos from the Valuetainment channel discuss the history of taxes and warfare in America. The first video chronicles the correlation between US wars and tax increases, highlighting how wartime financing repeatedly led to new or increased taxes, even after promises to eliminate them once the debt was paid. The second video proposes a plan to eliminate income tax by increasing tariffs and reducing government spending and inefficiencies, arguing that current tax revenue disproportionately comes from the wealthy and that the US government is excessively large.