Associated Press no longer offers their content via RSS. This repo contains code to extract the data from the site and convert it into RSS form.
A working version is hosted on AWS: topics for each feed can be found at:
http://associated-press.s3-website-us-east-1.amazonaws.com
Each file is updated hourly.
For example, if you are using Slack, you can type:
/feed http://associated-press.s3-website-us-east-1.amazonaws.com/topnews.xml
to subscribe to the Top News stories.