Lawmakers offer support for McCain after he discontinues cancer treatment
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Lawmakers from both sides of the aisle are rushing to offer their support after GOP Sen. John McCainJohn Sidney McCainArizona race becomes Senate GOP’s ‘firewall’ Trump administration weakens methane pollution standards for drilling on public lands Another recession could hit US in 2019, says credit union association chief MORE's (Ariz.) family announced he has decided to end medical treatment more than a year after being diagnosed with brain cancer.

Several of McCain's Senate colleagues quickly took to social media to react to the announcement, offering their "thoughts and prayers" for the 81-year-old senator who has been absent from Washington since December.

"Very sad to hear this morning’s update from the family of our dear friend. ... We are so fortunate to call him our friend and colleague. John, Cindy, and the entire McCain family are in our prayers at this incredibly difficult hour," Senate Majority Leader Mitch McConnellAddison (Mitch) Mitchell McConnellKey GOP senators appear cool to Kavanaugh accuser's demand Trump hints at new executive action on immigration, wants filibuster-proof Senate majority The Hill's Morning Report — Sponsored by United Against Nuclear Iran — The Hill interviews President Trump MORE (R-Ky.) said in a tweet.

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Senate Minority Leader Charles SchumerCharles (Chuck) Ellis SchumerTrump, GOP regain edge in Kavanaugh battle READ: President Trump’s exclusive interview with Hill.TV The Hill's 12:30 Report — Trump slams Sessions in exclusive Hill.TV interview | Kavanaugh accuser wants FBI investigation MORE (D-N.Y.) added: "My thoughts and prayers are with Senator McCain and his family."

Members of the House, where McCain briefly served before becoming a senator, also weighed in, with House Speaker Paul RyanPaul Davis RyanGOP super PAC drops .5 million on Nevada ad campaign Blue wave poses governing risks for Dems Dems seek to rebuild blue wall in Rust Belt contests MORE (R-Wis.) saying McCain "personifies service to our country."

"The whole House is keeping John and his family in our prayers during this time," he said.

Sen. James InhofeJames (Jim) Mountain InhofeTrump privately calls Mattis ‘Moderate Dog’: report Cruz gets help from Senate GOP in face of serious challenge from O’Rourke The Hill's Morning Report — Sponsored by Better Medicare Alliance — Steady Kavanaugh proves to be a tough target for Democrats MORE (R-Okla.), who has served in McCain's role as chairman of the Armed Services Committee in the senator's absence, said his prayers are with the family "during this difficult time."  

McCain was first elected to the Senate in 1986 and is widely respected by his colleagues on both sides of the aisle, who recently passed a mammoth defense policy bill named after him.

"God bless and keep this wonderful man and his family," GOP Sen. Jeff FlakeJeffrey (Jeff) Lane FlakePoll: More voters oppose Kavanaugh’s nomination than support it Ford opens door to testifying next week Police arrest nearly two dozen Kavanaugh protesters MORE (Ariz.) said in a tweet. Flake previously confronted Trump during a 2016 closed-door GOP caucus lunch because of the then-candidate's mocking of McCain.

"One of the true honors of my life has been having @SenJohnMcCain as a friend & mentor. He’s a true American hero. His courage & indomitable spirit have inspired millions in America & across the globe. I humbly ask all Americans to pray for him & his loving family. Semper Fi John," GOP Sen. Dan SullivanDaniel Scott SullivanCruz gets help from Senate GOP in face of serious challenge from O’Rourke Spotlight shifts to Kavanaugh ahead of hearings GOP senator: Trump firing Sessions wouldn't be 'politically wise' MORE (Alaska) said in a tweet.

GOP Sen. Johnny IsaksonJohn (Johnny) Hardy IsaksonTrump blasts Tester at Montana rally: 'He loves the swamp' Renaming Senate office building after McCain sparks GOP backlash GOP senator warns Trump: Anyone who trash-talks McCain 'deserves a whipping' MORE (Ga.) added that the country owes McCain a "debt of gratitude."

Democratic Sen. Kirsten GillibrandKirsten Elizabeth GillibrandTeen girls pen open letter supporting Kavanaugh accuser: We imagine you at that party and 'see ourselves' Poll: Most Massachusetts voters don't think Warren should run for president in 2020 The Hill's Morning Report — Sponsored by United Against Nuclear Iran — GOP again has momentum on Kavanaugh rollercoaster MORE (N.Y.) added: Thank you for your courage, and for your extraordinary service and leadership."

In addition to senators, congressional staffers also began sharing their memories of McCain.

Kevin Bishop — a spokesman for GOP Sen. Lindsey GrahamLindsey Olin GrahamKim, Moon toss ball to Trump in ‘last, best chance’ for Korean peace GOP senator: Kavanaugh accuser 'moving the goalposts' Collins: Kavanaugh accuser should 'reconsider,' testify on Monday MORE (S.C.), a close friend and Senate ally of McCain's — recalled a CNN town hall the two senators did together.

McCain was diagnosed in July 2017 with an aggressive form of brain cancer, which was discovered after he had surgery to remove a clot above his eye.

"In the year since, John has surpassed expectations for his survival. But the progress of disease and the inexorable advance of age render their verdict. With his usual strength of will, he has now chosen to discontinue medical treatment," McCain's family said in a statement released by his office on Friday.