Trump was baiting Nasa’s head, asking why we couldn’t go directly to Mars instead of puttering around on the Moon first, bringing in Michael Collins and Buzz Aldrin on the subject.
Trump’s right: assuming that you want to send a manned mission to Mars, Mars Direct is the most logical ( and cheapest) way. NASA is bullshitting us. Nice seeing the reporters demonstrate their incomplete knowledge of Hohmann orbits: but they must know more about other things. Some other thing.
It is possible to imagine a real economic payoff for a Mars mission (I was called a person of broad imagination at the ISIR conference) but harder to see why you’d need men there.