Local TV limits and other media rules are teed up for March 31 commission vote.
Martin Marietta has acknowledged overlaps in Oklahoma and Texas, but merger could receive antitrust approval as early as March 20.
An antitrust watchdog group warned Tuesday that the $8.2 billion proposed acquisition of US Foods by Sysco will create a monopoly among broadline food distributors, which specialize in delivering food and food service supplies to institutional clients such as restaurants, universities and military bases.
Opponents of media consolidation have been seeking restrictions on the arrangements for years.
Federal regulators seen likely to approve $67 billion deal after imposing conditions on how Comcast traffics rivals' content over its broadband network.
Small wireless carriers are mounting an 11th-hour push to convince the Federal Communications Commission to require that AT&T charge "reasonable" roaming 4G rates as a condition of approving AT&T's acquisition of prepaid mobile phone carrier Leap Wireless International.
DOJ antitrust head lauds preservation of cellular carrier as separate player.
Regulator extends the antitrust review of Men's Wearhouse's $1.6 billion hostile tender offer.
Big Blue's federal server business could draw national security panel to Lenovo's $2.3 billion purchase.
The DOJ is expected to win the right to conduct the antitrust review of the $8.2 billion food distribution deal.