Why It Matters
Idaho law enforcement agencies could face a new statewide mandate to formally participate in federal immigration enforcement under legislation advancing in the Idaho Senate. Senate Bill 1441 would require city police departments and county sheriffs’ offices across Idaho to enter into 287(g) agreements with U.S. Immigration and Customs Enforcement, creating a uniform immigration enforcement framework for the state.
The bill represents one of the most significant shifts in Idaho’s approach to immigration enforcement at the local level, potentially changing how dozens of law enforcement agencies across the state coordinate with federal authorities.
What Happened
The Idaho Senate State Affairs Committee voted on Monday, March 30, 2026, to send Senate Bill 1441 to the Senate floor, where it may be subject to further amendments before a full vote. The committee’s advancement of the bill marks a revival of an earlier legislative push that stalled in the same committee just weeks prior.
Senate President Pro Tempore Kelly Anthon, R-Rupert, is sponsoring the bill. Anthon described the legislation as an effort to establish a consistent statewide standard rather than a patchwork of different policies across Idaho’s many jurisdictions.
“What this bill is really about is providing a uniform framework across the state,” Anthon said at Monday’s public hearing. “A general rule that allows for exceptions, as opposed to a situation where we don’t know what the situation is in every different jurisdiction.”
Under the bill, local law enforcement agencies would be required to enter 287(g) agreements with ICE, which allow participating agencies to perform certain limited immigration enforcement functions. Exceptions to the mandate would be available only if resources are insufficient or if the relevant city council or county commission publishes a formal “finding of fact” documenting that the agency cannot afford to participate.
Despite Anthon’s revisions to address earlier concerns, the Idaho Sheriffs’ Association again testified in opposition to the bill at Monday’s public hearing. County sheriffs argued that law enforcement agencies already have the option to enter 287(g) agreements voluntarily and that all Idaho sheriffs cooperate with ICE through other channels outside the formal program.
Canyon County Sheriff Kieran Donahue was among those who testified against the bill. The Idaho Sheriffs’ Association has also publicly alleged that legislative leaders have been responding to pressure from Stephen Miller, a senior official in President Donald Trump’s administration, in advancing the mandate.
By the Numbers
- Senate Bill 1441 is the second attempt at this mandate, following House Bill 659, which passed the House but died in the Senate State Affairs Committee on March 16, 2026.
- 287(g) agreements are authorized under Section 287(g) of the Immigration and Nationality Act and allow local law enforcement to carry out specific immigration enforcement duties under ICE supervision.
- The bill includes narrow exceptions, requiring a formal published “finding of fact” from a city council or county commission to opt out on financial grounds.
- The Idaho Senate State Affairs Committee advanced the bill to the full Senate floor, where additional amendments are expected before any final vote.
- Anthon indicated he consulted with both federal officials and the Idaho Sheriffs’ Association in crafting the revised version of the legislation.
Zoom Out
Idaho’s effort to mandate 287(g) participation reflects a broader national trend in which Republican-led state legislatures are moving to require, rather than simply permit, local law enforcement cooperation with federal immigration authorities. Several other states have introduced or passed similar measures during the current legislative cycle, aligning with the Trump administration’s push to expand interior immigration enforcement.
The 287(g) program itself has expanded significantly since the beginning of the Trump administration’s second term, with ICE actively recruiting new law enforcement partners. However, resistance from sheriffs and local officials — even in conservative states — has been a recurring obstacle, with many agencies citing resource constraints and jurisdictional concerns.
What’s Next
Senate Bill 1441 will now move to the Idaho Senate floor, where lawmakers are expected to consider additional amendments before holding a full vote. If passed by the Senate, the bill would need to be reconciled with the earlier House version before heading to Governor Brad Little’s desk. The legislative session’s remaining schedule will determine how quickly the bill could advance to a final vote.