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" Though his biggest challenge will be placating conservative activists within his own party who believe he is too accommodating , Livingston is no moderate : He opposes abortion , supports increased spending on the military and on missile defense , backs business causes and wants tax cuts . Moving forward , the greatest challenge will be restoring faith in the Congress — that the politicians charged with the well-being of teenagers on Capitol Hill will treat them as if they were their own children . " The major challenges will be increasing the voice of UKRI in the IEEE and ensuring that Queen 's is fairly represented in national and international events . The greatest challenge will be paying the growing cost of retiree health care . A major challenge will be strengthening the weapon 's casing and internal support structures to protect the warhead , says Paul Yarrington , a Sandia nuclear weapons scientist , because the warhead will not detonate if its explosives do not fire in perfect precision .