Donald Trump, in his much-anticipated speech on immigration in Phoenix on Wednesday, pressed his hard-line approach to illegal immigration, even as he backed off a previous pledge to forcibly remove 11 million immigrants here illegally.

Here’s what Mr. Trump offered in a plan for fighting illegal immigration:

• Build the wall.

• End the catch and release policy for undocumented immigrants and instead return them to their country of origin.

• Have zero tolerance for undocumented immigrants who have committed a crime, and deport them.

• Triple the number of deportation officers at the department of Immigration and Customs Enforcement.

• Repeal President Obama’s executive orders that temporarily protected undocumented immigrants from deportation and authorized them to receive work permit