Does homeland security monitor money coming into the US?

Yes, the Department of Homeland Security (DHS) monitors money coming into the U.S. as part of its efforts to prevent money laundering, terrorist financing, and other illicit activities. Agencies such as the Financial Crimes Enforcement Network (FinCEN) work in coordination with DHS to track large financial transactions and ensure compliance with regulations. Additionally, U.S. Customs and Border Protection (CBP) enforces laws related to the transportation of currency across borders.