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Chiricahua is believed to have formed after a volcanic eruption 27 millions years ago left 2,000-foot-high layers of pumice and ash that fused to create rhyolitic tuff rock.

Chiricahua National Monument – one of Arizona’s unique sky islands with a history that includes Geronimo, Buffalo Soldiers and the 1930s Civilian Conservation Corps – could become Arizona’s fourth national park if a bipartisan bill finally passes this year in Congress. Read more»

U.S. Rep. Ruben Gallego talks to supporters in Tucson after announcing he would run for Senate, challenging former Democrat turned independent Krysten Sinema for Arizona's seat.

U.S. Treasury officials could begin targeting foreign bank accounts used to support fentanyl smuggling if a bill introduced by U.S. Rep. Ruben Gallego makes it way through Congress. Read more»

Migrants are escorted by U.S. Customs and Border Protection agents near the Paso del Norte International Bridge in El Paso on June 15, 2019.

A sharply divided U.S. House passed a border security package Thursday - dubbed the Secure the Border Act and approved largely along party lines - that was heavily influenced by Texas Republicans who took the reins on their party’s border agenda this year. Read more»

U.S. Sens. Thom Tillis and Kyrsten Sinema on a Jan. 9, 2023, visit to the border in El Paso, Texas.

In a rare sit-down with reporters, U.S. Sen. Kyrsten Sinema of Arizona said Thursday that border states are not prepared for the end of a pandemic-era measure called Title 42 used to expel millions of migrants at the border. Read more»

Border Patrol agents used Title 42 to transport migrants found near Sasabe back to the U.S.-Mexico border, in this photo from March 2020, the early days of the order. More than 1.7 million people have since been turned back under Title 42, which is now set to expire on May 23.

A pandemic-era measure that allowed for the swift expulsion of millions of migrants at the Southwest border is set to end Thursday, and the Biden administration and state officials across the U.S. are bracing for a potential increase in asylum seekers. Read more»

Rep. Paul Gosar, R-Bullhead City, a seven-term incumbent running in a district with twice as many registered Republicans as Democrats, announced his reelection bid in March – 20 months before the 2024 election.

With 18 months until Election Day 2024, Arizonans ranging from citizen candidates to incumbents to state officials trying to upgrade to federal seats have already filed statements of interest on the secretary of state’s website. Read more»

Ariz. Gov. Katie Hobbs during a press conference at the Casa Alitas Drexel Center.

With Title 42 ending, Arizona Gov. Katie Hobbs laid out new steps to manage the influx of people coming across the U.S.-Mexico border this week, including bus routes and $7 million for municipalities. The Biden administration announced new restrictions on asylum applications. Read more»

A member of the National Guard during Operation Guardian Support in Nogales, Ariz. in 2018.

The Biden administration will send an additional 1,500 National Guard troops to the U.S.-Mexico border to support border officials ahead of an expected influx of migrants seeking asylum following the end of Title 42 next week. This will "argument" the 2,500 military personnel already on border. Read more»

From left, Yuma Mayor Douglas Nicholls, Sierra Vista Mayor Clea McCaa II and Pima County Deputy Administrator Francisco Garcia testify to a Senate panel on the impact surging immigration has had on their communities.

Arizona border communities face a “humanitarian disaster” in two weeks if the federal government does not step in to help with the crush of migrants expected when Title 42 ends, officials from Pima County, Yuma and Sierra Vista told a Senate panel Wednesday. Read more»

A pink sunrise as seen from Hopi Point on the Grand Canyon’s South Rim in this 2018 photo. Tribes and environmental groups are calling for the president to designate an additional 1 million acres around Grand Canyon National Park as a new national monument, to further protect the park.

Tribal leaders and lawmakers called on President Biden to set aside more than 1.1 million acres around the Grand Canyon as a new national monument, needed to protect the area’s water, wildlife, sacred spaces and ancestral homelands from uranium mining and other projects. Read more»

Pinal County Sheriff Mark Lamb in 2022.

Republican Pinal County Sheriff Mark Lamb announced Tuesday he is running for U.S. Senate seat currently held by Kyrsten Sinema, becoming the first Republican to enter the 2024 contest, but unlikely to be the last. Read more»

Defining which wetlands qualify under WOTUS has been a yearslong issue. The EPA under former President Barack Obama established a new definition, which was then narrowed under the Trump administration.

President Joe Biden on Thursday vetoed a measure that would repeal a rule expanding which types of wetlands can be regulated under the Clean Water Act - though the issue has reached the U.S. Supreme Court, which is expected to decide on the Obama-era rule this session. Read more»

Democratic senators, while underlining their support for reproductive rights, did not seem to have a plan in mind if the judge ends access to medication abortion, which accounts for more than half of pregnancy terminations in the United States.

U.S. Senate Democrats appear lukewarm about pursuing reproductive rights legislation in a divided Congress, even as a federal judge in Texas considers overturning access to abortion pills nationwide. Read more»

The federal government has historically stayed out of Colorado River negotiations, but has expanded its role in recent years to protect its dams and reservoirs, such as Glen Canyon Dam at Lake Powell, which has recently fallen to historic lows.

Senators from the seven Western states in the Colorado River basin - including Arizona Sens. Kyrsten Sinema and Mark Kelly - have been quietly meeting “for about a year,” to facilitate difficult discussions between the states over the future of the river. Read more»

The resolution is an attempt to add another chapter in a long recent history of expanding and contracting definitions on regulatable wetlands.

The U.S. House voted to undo a Biden administration definition of what qualifies as “waters of the United States,” a rule unpopular with farmers and others who say that maintenance on private property is more difficult when permission from the government must be granted. Read more»

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