(Reuters) - The U.S. Federal Trade Commission has asked for more information from Vizio ( VZIO ) and Walmart ( WMT ) regarding their proposed $2.3 billion deal, the smart-TV maker said on Tuesday.

U.S. lawmakers have sought for an increased scrutiny from the FTC on many multi-billion dollar deals that might risk higher prices and affect consumers.

Several deals including that of supermarket chain Kroger and its smaller rival Albertsons, as well as Coach parent Tapestry and Michael Kors owner Capri have come under the FTC's radar as it looks to encourage fair, open and competitive markets.

Walmart ( WMT ) had proposed to buy Vizio ( VZIO ) for $11.50 per share in cash in February, in another bet on the retailer's fast-growing U.S. advertising business, Walmart Connect, and gaining access to Vizio's ( VZIO ) SmartCast operating system, which streams ad-supported content on its devices.

The big-box retailer had said in March it had notified two U.S. antitrust agencies it would withdraw and refile a certain review application for its planned acquisition of Vizio ( VZIO ), to give the regulators more time to review the deal.

Vizio ( VZIO ) said on Tuesday both the companies expect to "promptly respond" to the FTC's request, while work "cooperatively" with the regulator as it conducts their review of the deal.