A fault discovered in Idaho could produce an earthquake of 7.5 magnitude.
Scientists at Idaho State University map out a new, active seismic fault in the US Rocky Mountains capable of unleashing a 7.5 magnitude earthquake.
- Voters in the U.S. states of Mississippi, Michigan, Hawaii and Idaho vote in primary elections and caucuses.
- The U.S. Department of Energy cancels a shipment of 100 pounds of spent nuclear fuel (estimated value $200 million per year) to Idaho after failing to agree on terms that required a waiver to their 1995 agreement.
- The United States Federal Government recognizes same-sex marriage in Alaska, Arizona, Idaho, North Carolina, West Virginia and Wyoming, bringing the total number of states with recognition of gay marriage to 32.
- Residents evacuated from Greenhorn Gulch area in Idaho from the Beaver Creek fire.
- An Idaho man, Oscar Ramiro Ortega-Hernandez, is charged with the attempted assassination of U.S. President Barack Obama, after two bullets are found embedded in the exterior of the White House. The President and First Lady were not present at the time of the alleged attack.