Urais wa Barack Obama ulianza tarehe 20 Januari 2009 saa sita mchana EST, alipoapishwa kama rais nambari 44 wa Marekani. Obama alikuwa mjumbe katika Bunge La Maseneta La Marekani kutoka Illinois alipomshinda mjumbe wa Arizona, Seneta John McCain, katika uchaguzi wa rais wa Marekani mwaka 2008. Sera zake Obama zimejumuisha majaribio ya kuyaondoa matatanisho ya kiuchumi ya miaka 2008-2009, na pia mabadiliko katika sheria za ushuru za Marekani. Katika sera zinazohusu nch za kigeni, Obama amejaribu kuukarabati uhusiano wa Mrekani na nchi nyingine, na pia kuanza kutamatisha ufungwaji wa mahabusu wa kigeni katika kituo cha kijeshi cha Guantanamo Bay. Obama ametanganza kwamba atajaribu kupunguza silaha za nyuklia zinazohifadhiwa na jeshi la Marekani. "President Obama's People" (photography: Nadav Kander) The Official White House YouTube page Full transcript and video of President Obama's inaugural address Archived 2011-08-25 at WebCite Full Video of The American Recovery and Reinvestment Act of 2009 signing ceremony on February 17, 2009 (from C-SPAN)[dead link] Official Video of Open For Questions Online Town Hall on March 26, 2009 from (WhiteHouse.gov) Archived 4 Novemba 2009 at the Wayback Machine.