Sens. Amy KlobucharAmy KlobucharThe Hill’s Morning Report – Biden address to Congress will dominate busy week Democrats push for chokehold ban, limited immunity in police reform talks Sunday shows – Biden’s first 100 days, police reform dominate MORE (D-Minn.) and Mike LeeMichael (Mike) Shumway LeeMigrant children suffering the unintended consequences of Biden policy Hillicon Valley: Facebook, Twitter, YouTube execs to testify at Senate hearing on algorithms | Five big players to watch in Big Tech’s antitrust fight GOP lawmakers question CDC on mask guidance for young kids MORE (R-Utah) are questioning whether Google tried to influence one of its critics to change their testimony before a hearing last week on dominant app stores.

Jared Sine, chief legal officer at Match Group, testified during the hearing that a Google employee had called his company the night before, asking “why our testimony was different than what we’d said about the situation in our earnings call earlier this year.”

In a letter to Google’s senior director of government affairs and public policy, Wilson White, the top two senators on the panel that held the hearing said they “are deeply troubled by the possibility that Google may have attempted to influence another witness’s testimony.”

“Any efforts to retaliate against those who speak up about public policy issues or possible legal violations are unacceptable, especially by dominant companies that have the power to destroy the business of a whistle-blower,” the lawmakers wrote in the letter sent Tuesday.

“We feel an obligation to determine the facts about what occurred during Google’s conversation with Match on Tuesday evening.”

A spokesperson for Google told The Hill that “we did not and would not try to influence their testimony, intimidate them or otherwise retaliate.”

“Match is a valued partner and we regularly communicate with them about the business we do together,” the spokesperson added in a statement.

The lawmakers are asking for a response to a series of questions about the alleged call by May 4.

Last week’s hearing focused on concerns about the power of Apple and Google’s app stores.

Several app-based companies, including Match, testified against the commission fees of up to 30 percent that the Silicon Valley giants impose on some apps.

White and Apple’s chief compliance officer, Kyle Andeer, defended their stores’s policies and highlighted changes to their commission frameworks.

-Updated 3:08 p.m.