On July 18, Obama dedicated his weekly radio address to the agreement, saying, “This agreement will make America and the world safer and safer,” refuting “a lot of overheated and often dishonest arguments about it”;  Obama said, “As commander-in-chief, I make no apologies for keeping this country safe and secure through hard diplomatic work on the mild warstorm.”  On July 23, in the White House cabinet room, Obama met with a dozen undecided Democrats in the House of Representatives to discuss the deal and seek their support.  The Roman Catholic Church voted in favour of the agreement. In a July 14, 2015 letter to Congress, Archbishop Oscar Canté, chairman of the Committee for International Justice and Peace of the United States Conference of Catholic Bishops, wrote that the JCPOA was “an important agreement” that “marks progress in nuclear non-proliferation around the world.”   Catholic bishops in the United States “will continue to ask Congress to approve the outcome of these intense negotiations, as the alternative leads to armed conflict, an outcome that deeply worries the Church.”   Before July 2015, Iran had a large stockpile of enriched uranium and nearly 20,000 centrifuges, enough to make eight to ten bombs, according to the Obama administration. The Congressional Research Service provides an update on Iran`s nuclear program. Restrictions on Iran`s nuclear program under the deal could survive. In comments at the Aspen Security Forum in Aspen, Colorado, in July 2015, National Intelligence Director James Clapper said the JCPOA would improve the U.S. ability to monitor Iran: “[The agreement] brings us in terms of consultation and access to a much better place than any agreement.  Clapper continued to be “concerned about respect and deception,” while noting that [Iran] had complied with the rules negotiated under the Joint Plan of Action during the negotiation period.  Trump formally withdrew the United States from the agreement in May 2018 and reinstated banking and oil sanctions. They apply not only to U.S.
citizens, who are generally unable to conduct transactions with Iran, but also to foreigners. To do business in Iranian markets, they would give up access to much larger U.S. markets and access to the global banking system.