VOA慢速英语:Trump Announces Plan for Border Wall

sanctuary - adj. a place where someone or something is protected or given shelter

gang - n. a group of criminals

cartel - n. a group of illegal drug sellers

wreak havoc - idiom, meaning to cause a lot of trouble

complicated - adj. hard to understand or explain

role - n. a part that someone has in a particular activity or situation

open season - expression. a period when all restrictions on an activity or product are ignored