Here is more from Axios:
Ben Carson, the secretary of Housing and Urban Development, has told confidants he wants to start a think tank after President Trump leaves office next month. Carson, a neurosurgeon by trade who competed with Trump for the Republican Party's 2016 presidential nomination, wants to start an organization that will promote Trump's policies and foster bipartisan dialogue, a source in his inner circle told Axios.
It's unclear how any such group would be funded or mesh with any entity Trump launches in exile. The closest the source came to defining policy focuses was to say it would include "increasing self-sufficiency" and "promoting religious freedom."
While Cabinet members have often gone into the think tank world, it is very rare for them to start their own think tank.