Google was fined $1.7 billion by European authorities for requiring websites using its search bar to feature Google's advertising services over rivals, which was found to be an unfair practice that cemented Google's dominance in online search advertising. This is the third major fine Google has received from the EU since 2017 totaling over $9 billion for leveraging its power in search, mobile operating systems, and shopping services to undercut competitors. Some US politicians have also called for increased scrutiny of large tech companies like Google, Apple, Amazon, and Facebook and potential measures like breaking them up. In response to the fines, Google announced changes to allow more choice of browsers and search engines on Android devices and boost rival services in some search results.