Trump has promised a mass deportation, which economists warn could be highly inflationary.Rebecca Noble/Getty ImagesThink-tank economists told BI that Trump's promise to deport millions would likely be inflationary.The disruption to the labor supply would both jack up everyday prices and impact capital investment.With immigration as a key election issue, the experts said Harris' policies are less disruptive.When the Federal Reserve cut interest rates last week, the country began to close the door on the inflation that has defined the post-pandemic era.