People in the U.S. state of Arizona protest the introduction of state immigration laws with demonstrators being arrested outside the office of Maricopa County sheriff Joe Arpaio.
Four state Democratic Parties sue the Donald Trump presidential campaign, the state Republican Parties, and "Stop the Steal" group founder Roger Stone for voter intimidation in the states of Ohio, Pennsylvania, Nevada, and Arizona.
Two dozen protesters park their cars in the middle of Shea Boulevard, and block the main road to the Phoenix suburb of Fountain Hills, Arizona, where Donald Trump's campaign rally with former Arizona Governor Jan Brewer, and controversial sheriff Joe Arpaio was held. For hours, traffic was backed up for miles. The road was eventually cleared. Three protesters were arrested and two cars were towed from the boulevard.
U.S. federal authorities arrest militia leader Ammon Bundy and several of his followers following an exchange of gunfire at a traffic stop on U.S. Route 395 in Harney County, Oregon. One person, LaVoy Finicum, a rancher from Arizona and spokesman for the militia, was killed in the shootout.
The jury in the U.S. state of Arizona that convicted Jodi Arias of first-degree murder last week quickly decide that she should either face the death penalty or life in prison without parole during the penalty phase of trial.
The United States Supreme Court rules that Arizona's immigration law is mostly unconstitutional, except for the part that allows for law enforcement officers, in the course of their duties, to ask about an illegal immigrant's legal status if they have actual reasons to believe that the person is an immigrant and is here illegally, especially if they are of relevance to a case.
A blackout in southern California, Arizona and Baja California in Mexico caused by the loss of the entire San Diego Gas & Electric system leads to the closure of San Onofre Nuclear Generating Station and the loss of power to more than two million people.
United States federal judge Susan Bolton issues a ruling blocking Arizona from implementing sections of Arizona SB 1070 requiring police to check a person's immigration status and requiring immigrants to carry their papers at all times.