Final answer:
President Trump changed immigration policies in the USA through measures such as a border wall, increased deportations, and reductions in H1B immigrants. These changes were more restrictive compared to previous administrations.
Step-by-step explanation:
During his tenure as president, President Trump changed immigration policies in the USA through various measures. Some of these policies included plans for a border wall, increased deportation of undocumented immigrants, and reductions in the number of highly skilled legal H1B immigrants. These changes represented a shift towards a more restrictive approach to immigration compared to previous administrations. While there were disagreements among economists and the overall population about the desirability of immigration, any significant immigration reform was put on hold during the Trump Administration.