George W. Bush helping vulnerable GOP senators
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Former President George W. Bush is lending a hand to vulnerable GOP senators whose reelection campaigns are at risk of being hurt by Donald TrumpDonald TrumpHarry Reid reacts to Boehner book excerpt: 'We didn't mince words' Man arrested for allegedly threatening to stab undercover Asian officer in NYC Trump says GOP will take White House in 2024 in prepared speech MORE.

He will also appear at a fundraiser for Sen. Roy BluntRoy Dean BluntSunday shows preview: Democrats eye two-part infrastructure push; Michigan coronavirus cases surge DC delegate pushes for removing Capitol fence despite car attack Coons says bipartisan infrastructure package 'likely' to be smaller, not fully financed MORE (Mo.) next week, with similar events in the works for Sens. Ron JohnsonRonald (Ron) Harold JohnsonThe Hill's Morning Report - Biden assails 'epidemic' of gun violence amid SC, Texas shootings Trump faces test of power with early endorsements Trump endorses Rand Paul for reelection MORE (Wis.) and Rob PortmanRobert (Rob) Jones PortmanTo encourage innovation, Congress should pass two bills protecting important R&D tax provision The Hill's Morning Report - Biden assails 'epidemic' of gun violence amid SC, Texas shootings Biden-GOP infrastructure talks off to rocky start MORE (Ohio), according to the report.
All of those senators are considered vulnerable in a year where Republicans are defending far more seats than Democrats. While the GOP has 24 senators up for reelection in 2016, Democrats only have 10.

Bush at the McCain event stressed the necessity of preserving a GOP-led Senate as a "check and balance" on the White House regardless of whether Trump or Democratic presidential hopeful Hillary ClintonHillary Diane Rodham ClintonClose the avenues of foreign meddling Pelosi planned on retiring until Trump won election: report Pence autobiography coming from Simon & Schuster MORE becomes president, according to the Times.

“President Bush believes that it’s critical to keep the Senate in Republican hands,” Bush spokesman Freddy Ford told the paper. “He is actively helping some senators in tight races who are strong leaders and share timeless conservative values.”

Bush has shied away from publicly criticizing Trump, though the Times reported that friends of the former president say he's bothered by the businessman's campaign message and remarks on Muslims and immigrants.
Trump won the GOP primary despite bashing the former president, calling the Iraq War a mistake and noting the Sept. 11, 2001, attacks happened under the former Texas governor's watch.
Jeb Bush, whom his elder brother supported in the GOP primary, dropped out of the Republican presidential race in mid-February, several months before Trump's final rivals exited the race.
George W. Bush announced through a spokesman last month that he wouldn't attend the GOP convention in July for Trump to be officially declared the party's nominee.
The campaign arm for Senate Democrats, the Democratic Senatorial Campaign Committee (DSCC), used the reported fundraisers to tweak Republicans and bash Bush.

“Republicans are so desperate for people to forget that they’ve pledged their allegiance to Donald Trump that they are now campaigning with the architect of a disastrous foreign policy who wanted to privatize Social Security and left office with the economy losing nearly 800,000 jobs a month," DSCC spokesman Sam Lau said in a statement sent to The Hill.
—Updated at 10:46 a.m. on June 17.