Well Trump invited her in! Bad decision on his part!
I think he let his heart (compassion) overrule his head.
Remember Trump thought that after a few months “they” would accept Hellary’s defeat and political discourse would decay back to the normal levels of partisanship. Trump told Limbaugh that, and Limbaugh told Trump in so many words, ‘No that’s not going to happen! The backlash is going to be unbelievable and will not quickly end!’. I think Trump now understands what Limbaugh meant.
Trump was trying to be inclusive . You cannot blame him for that effort. 38% of blacks now support what he is doing. That is awesome. She was the snake that he talked about on the campaign. She is now deeply despised and will drift from camp to camp among the communists but she is finished by the American people.