Immigration and Customs Enforcement (ICE) is a federal law enforcement agency within the Department of Homeland Security responsible for enforcing immigration laws and more than 400 related federal statutes, focusing on interior immigration enforcement, detention and removal, preventing terrorism, and combating the illegal movement of people and goods.
Homeland Security Investigations (HSI) is a directorate within ICE and serves as its principal criminal investigative arm. HSI conducts federal criminal investigations into transnational crime and violations of customs and immigration laws (such as human trafficking, child exploitation, drug and weapons smuggling, financial and cybercrime, export-control and intellectual‑property violations) in the U.S. and abroad.
In short: ICE is the overall agency; HSI is one of its two main operational components (alongside Enforcement and Removal Operations) and specializes in complex criminal investigations rather than day‑to‑day civil immigration arrests and removals.
ERO stands for Enforcement and Removal Operations, a major directorate within ICE.
According to ICE, ERO’s officers and staff:
These are the core “enforcement and removal” duties that underlie the ERO references in the DHS Law Enforcement Appreciation Day release.
HSI Rapid Response Teams (RRTs) are all‑volunteer teams made up of Homeland Security Investigations special agents and support personnel who are trained and equipped to deploy quickly during natural or man‑made disasters and other emergencies.
ICE describes them as:
The source for the figures claiming a more than 1,300% increase in assaults, 3,200% increase in vehicular attacks, and 8,000% increase in death threats against ICE/DHS officers is a January 8, 2026 DHS press release titled “Radical Rhetoric by Sanctuary Politicians Leads to an Unprecedented 1,300% Increase in Assaults Against ICE Officers and a 3,200% Increase in Vehicular Attacks.” The Law Enforcement Appreciation Day statement the next day repeats these numbers and explicitly cites DHS’s own statistics.
The only methodology disclosed in DHS’s materials is:
DHS does not provide a public technical report or dataset detailing data sources, definitions (for what counts as an assault, vehicular attack, or death threat), or validation methods, so the precise methodology beyond these simple year‑over‑year comparisons is not publicly documented.
DHS law enforcement actions, including those by ICE and HSI, are subject to multiple layers of oversight and review, though the strength and independence of these mechanisms has been under pressure in recent years:
DHS Office of Inspector General (OIG)
Office for Civil Rights and Civil Liberties (CRCL)
Office of the Immigration Detention Ombudsman (OIDO)
Other oversight (not exhaustive)
Overall, while formal oversight structures remain in place (OIG, CRCL, OIDO, internal ICE offices, and courts), investigative reporting indicates that some key civil‑rights‑focused oversight functions within DHS have been reduced or constrained since 2024–2025.
The join.ICE.gov ("America Needs You") recruitment campaign points applicants to ICE law‑enforcement and related careers, primarily via ICE’s central recruiting pages and USAJOBS. Typical positions highlighted include:
Typical baseline qualifications across these jobs, as reflected in ICE’s recruitment materials and vacancy announcements, include:
Applications themselves are submitted through USAJOBS and ICE career portals linked from the join.ICE.gov / “America Needs You” page.