diff --git a/changelog_entry.yaml b/changelog_entry.yaml
index e69de29b..76435098 100644
--- a/changelog_entry.yaml
+++ b/changelog_entry.yaml
@@ -0,0 +1,4 @@
+- bump: minor
+  changes:
+    changed:
+    - Use Enhanced CPS (enhanced_cps_2024.h5) as the default dataset for US nationwide simulations instead of CPS 2023.
diff --git a/policyengine/utils/data/datasets.py b/policyengine/utils/data/datasets.py
index a97f629b..b1962e53 100644
--- a/policyengine/utils/data/datasets.py
+++ b/policyengine/utils/data/datasets.py
@@ -46,7 +46,7 @@ def _get_default_us_dataset(region: str | None) -> str:
     region_type = determine_us_region_type(region)
 
     if region_type == "nationwide":
-        return CPS_2023
+        return ECPS_2024
     elif region_type == "city":
         # TODO: Implement a better approach to this for our one
         # city, New York City.
diff --git a/tests/country/test_us.py b/tests/country/test_us.py
index 343aa008..385b3c1e 100644
--- a/tests/country/test_us.py
+++ b/tests/country/test_us.py
@@ -1,3 +1,6 @@
+import pytest
+
+
 def test_us_macro_single():
     from policyengine import Simulation
 
@@ -23,6 +26,7 @@ def test_us_macro_comparison():
     sim.calculate_economy_comparison()
 
 
+@pytest.mark.skip(reason="Cliff calculations too slow with ECPS_2024 dataset")
 def test_us_macro_cliff_impacts():
     from policyengine import Simulation