Ending catch-and-release is a huge win for Americans and Trump because it means border officials now have a legal alternative to the catch-and-release rules which allow migrants to legally enter the United States if they bring children and claim asylum.

Those catch-and-release rules set by Congress and the courts also allow the migrants to get work permits before their asylum court hearings, which are now backlogged for two or more years.

Instead of catch-and-release, the migrants can be returned to Mexico until their asylum claims can be heard by a judge.

The "joint declaration" was outlined in a State Department message:

… those [migrants] crossing the U.S. Southern Border to seek asylum will be rapidly returned to Mexico where they may await the adjudication of their [US.] asylum claims.

In response, Mexico will authorize the entrance of all of those individuals for humanitarian reasons, in compliance with its international obligations, while they await the adjudication of their asylum claims. Mexico will also offer jobs, healthcare, and education according to its principles.

The United States commits to work to accelerate the adjudication of asylum claims and to conclude removal proceeding as expeditiously as possible.