(CNN) Sen. Mitt Romney is the only GOP senator who was not asked to be on President Donald Trump's new bipartisan task force focused on reopening the country amid the novel coronavirus pandemic.

Nearly 100 lawmakers from both parties -- including all of Romney's Senate Republican colleagues -- were tapped to join "the Opening Up America Again Congressional Group," according to a list released by the White House Thursday.

The President reviewed the list of which lawmakers would be on the task force before it was finalized, an official told CNN. Romney was not included and was not asked to be on the call with other senators Thursday, another official confirmed.

The move marks just the latest slight in Romney and Trump's contentious relationship -- one that grew increasingly tense during the Senate's impeachment trial of the President after the Utah Republican broke ranks with the party to vote to convict the President on the charge of abuse of power.

The President responded by attacking Romney as a "failed presidential candidate."

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