He is already succeeding in his role as president.
He is screwing the American citizenry as he increases income inequality in favor of.the pimps who put him in office.
Look at the defense budget.
Look at no change or attempt to overturn Citizens United which allows politicians.to be bought by the highest bidder.
Trump, as all who proceeded him, is just a puppet.
In his case, the head of the puppet is completely empty.