This set of 16 debate cards has a controversial question about US policies on each one. I use them for students to practice discussion/debate skills but they can be used in a variety of ways. They can be essay topics, stations discussion topics, a discussion activity to use with extra time at the end of class, etc... They are colorful with fun fonts to engage students visually.
The questions can definitely be divisive so be sure students are aware of respectful ways to disagree and word strong opinions.