The Rise of "Transactional Federalism"

Rather than adhering to the traditional conservative philosophy of a blanket devolution of power to all states, the Trump administration pioneered a conditional approach. Intergovernmental relations became highly transactional: [1, 2]

• Rewarding and Penalizing States: The administration has frequently leveraged federal mechanisms to reward compliant, politically aligned "red" states while aggressively penalizing dissenting "blue" states. [1, 2]

• Funding Predictability: The administration upended state budgeting by threatening to withhold, delay, or pull congressionally approved federal funds from non-compliant jurisdictions, such as withholding grant money from "sanctuary cities" or demanding compliance on voter data. [1, 2, 3]

• Shifting Responsibilities: In major programs, the federal government shifted massive operational burdens to states abruptly, often before local governments could build the institutional capacity to deliver, putting vulnerable program recipients at risk. [1]

 Centralization via the Administrative Presidency

Belying historical Republican rhetoric regarding limited national government, the Trump presidency has routinely expanded federal executive power to override state autonomy. [1, 2]

• Immigration & Border Surges: The federal government has pushed the boundaries of state sovereignty through immigration enforcement surges, crackdowns on sanctuary jurisdictions, and the contested deployment or seizure of National Guard units. [1, 2]

• Elections and Nationalization: Trump's rhetoric and policy demands have increasingly targeted state-level domains, including aggressive pushes to nationalize voting procedures, restrict mail-in ballots, or demand state voter metrics, challenging the constitutional authority over elections traditionally reserved to the states under Article 1, Section 4. [1, 2, 3]

• Unitary Executive Expansion: The administration’s aggressive approach has been buttressed by significant legal shifts. Landmark U.S. Supreme Court rulings have expanded presidential immunity and explicitly reinforced the Unitary Executive Theory, ruling that any agency exercising regulatory power must be under direct, uninsulated presidential control. [1, 2]

Subnational Resistance and Judicial Warfare

The aggressive posture of the White House transformed states into the primary institutional battleground for checking executive overreach. [1, 2, 3]

• Multi-State Lawsuits: Led primarily by Democratic state attorneys general, coalitions of states have filed unprecedented waves of lawsuits to block sweeping executive orders regarding immigration, environmental deregulation, and health care.

• Strategic Reversals on Federalism: The administration's actions triggered a notable political realignment regarding states' rights. Democratic officials have increasingly pivoted to defending strict federalist boundaries and state limits. Conversely, many Republicans have aligned with Trump’s maximalist federal approach, prioritising partisan policy objectives over traditional commitments to local autonomy.

• The "Anti-Commandeering" Buffer: While the Supreme Court has handed Trump significant victories—including limiting the power of lower district courts to issue nationwide injunctions—foundational federalism principles like the anti-commandeering rule (which prevents the federal government from forcing state officers to execute federal mandates) continue to serve as a legal shield for states resisting federal pressure. [1, 2, 3, 4, 5]