President-elect Donald Trump will be able to make many of his promised changes in immigration policy unilaterally. And he can do this by exercising the same executive powers he criticized President Barack Obama for using. Most of the measures in Trump's ten-point immigration policy plan on Trump's transition website could be set in motion without legislative approval. But legal experts say fully implementing them would require funding that Congress would have to approve. Changes to homeland security would be expensive, and requiring a huge expansion of immigration courts and detention facilities. More deportations would also require more staff at every level of the system to investigate, apprehend and process the targeted immigrants. And Immigration courts already have a backload of more than 500 thousand cases.