I'm not understanding where or what he's basing his statements on? This seems to be the bill he's referencing: https://www.congress.gov/bill/117th-congress/senate-bill/228 It's extremely short and can be easily read, it's a fraction as long as the article.

The bill seems to do nothing except change various filing fees, and give ~half a billion to the FTC and DoJ Antitrust Division. I base this on the text of the bill as well as the bill's description itself: "This bill modifies and expands the schedule for graduated merger filing fees and requires that such fees be adjusted each year based on the Consumer Price Index."