Do you understand what the term "easy target" means?  

It basically means assigning blame to someone who really isn't responsible for the situation.

Somehow,  a question about the environment and pollution was turned by the Cardinal into a call for Trump to (of course) open U.S.'s borders to the whole world.

"Rich nations "should have regard for those who are really helpless and homeless and stateless," he said. "Those should be the ones that as much as possible should be provided for — not only for making American great by itself but greater will be the nation that really goes out and reaches out to others who are the most needy. That will make America great."

Again, the Cardinal would do better to call out those Asian nations who are doing all the polluting.    But, so much easier and safer to pin everything on America's  president.