The Justice department is suing AT&T to prevent them from closing on a deal which would allow them to acquire Time-Warner which could lead the way to a huge battle.
1972 was the last time the government won an anti-trust case when SCOTUS ruled in their favor in the Ford Motor Company's attempted takeover of a spark-plug business; the government successfully argued that it would violate anti-trust laws.
https://www.apnews.com/0ffd30616f0a4d74ac3bd19e8886ca7b/Justice-Dept.-sues-to-stop-AT&T's-$85B-Time-Warner-deal
Looks like another headache for the Trump administration to deal with.