Which issues divided Americans most significantly during the culture wars of the 1980s and 1990s? What issues divide Americans most today? How have these issues changed over the decades?

The correct answer to this open question is the following.

The issues that divided Americans most significantly during the culture wars of the 1980s and 1990s were the United States militarization of space with the Ronald Reagan program commonly known as "Star Wars," the issue of Abortion, the legalization of drugs for recreation purposes, the indiscriminate use of guns by citizens.

These issues have changed over the decades because US citizens change, necessities change, and politicians have to modify their campaign discourses and adjust their platforms to these new necessities.

Today, the issues that divide Americans are regarding the controversial decisions of the actual President, the response of US House of Representatives and the differences with the Senate, the immigration issue, and the fact that the US is the only country that did not sign the Kyoto Protocol to protect the environment.