Van Jones appeared on Jake Tapper's daily CNN broadcast on Friday afternoon 

Tapper blasted Trump for saying he's done most for African Americans since Lincoln 

During Thursday's debate, Trump said he was 'least racist person in the room' 

Jones said Trump 'doesn't get credit' for 'good things' he did for black people

Trump has been praised by Jones for supporting criminal justice reform

President signed into law First Step Act to ease sentences for nonviolent crimes 

Jones is said to have worked with Jared Kushner in crafting the legislation