The Orion spacecraft is the new big project under development. The US government had cold feet about expense for some time and probably still does - understandably. The costs of building such a spacecraft must be colossal and the US electorate would want their taxes spent elsewhere.
However, funding from private enterprise could be the answer as many firms re-invest in such a project to get their own space ideas into the cosmos and onto Mars. Private enterprise is beginning to find advantages in space exploration.