On January 14, 2004, Bush announced a Vision for Space Exploration, calling for the completion of the International Space Station by 2010 and the retirement of the space shuttle while developing a new spacecraft called the Crew Exploration Vehicle under the title Project Constellation. The CEV would be used to return American astronauts to the Moon by 2018, with the objective of establishing a permanent lunar base, and eventually sending future manned missions to Mars. To this end, the plan proposes that NASA's budget increase by five percent every year until it is capped at US$18 billion in 2008, with only inflationary increases thereafter. The planned retirement of the Space Shuttle fleet in 2010 after the ISS is completed is also expected to free up US$5 billion to US$6 billion a year. The US$16.2 billion budget for 2005 proposed by NASA met with resistance from House and Senate spending committees, and the initiative was little-mentioned during the presidential campaign. Nonetheless, the budget was approved with only minor changes shortly after the November elections.