[418] On November 2, Bush spoke at an event to 200 business and civic leaders at the George W. Bush Presidential Library and Museum to raise awareness for the upcoming Museum of the Bible in Washington D.C.[26][419] On November 11, Bush published a biography of his father titled 41: A Portrait of My Father.[420]
In an interview published by Israel Hayom magazine on June 12, 2015, Bush said "boots on the ground" would be needed to defeat the Islamic State of Iraq and the Levant (ISIS). He added that people had said during his presidency that he should withdraw American troops from Iraq, but he chose the opposite, sending 30,000 more troops to defeat Al Qaeda in Iraq, and that they indeed were defeated. Bush was also asked about Iran but declined to answer, stating that any answer he gives would be interpreted as undermining Obama.[421]
During the early stages of the 2016 Republican presidential primaries, Bush spoke and campaigned for his brother Jeb Bush at a South Carolina rally.[422][unreliable source?]However, the party's nomination eventually went to Donald Trump, whom Bush refused to endorse.[423] Furthermore, he did not attend the party's convention.