The House of Representatives voted unanimously Friday on a bill requiring Director of National Intelligence (DNI) Avril Haynes to declassify information about the origin of the coronavirus that causes Covid-19, increasing pressure on President Joe Biden’s administration to allow their release.

The bill passed with 419 votes in favor to none against. The Senate had approved it, also unanimously, on March 1, meaning it’s now up to Biden to ratify or veto it.

The White House did not immediately respond to a question about what Biden intends to do.

In the US, there has been a highly polarized public debate about the origins of SARS-CoV-2 almost since the first human cases were reported in the Chinese city of Wuhan in late 2019. Democrats and Republicans alike have been pushing for a tougher stance on China.

That debate reignited last month when the Wall Street Journal reported that the Energy Department concluded that the pandemic likely started due to a leak of the virus from a laboratory, which Beijing categorically denies. In its confidential report, however, the ministry writes that it is not absolutely sure of the correctness of its conclusion. Another four US agencies still believe that Covid-19 was likely the result of natural transmission of the virus while two are undecided.

Biden administration officials say that may never be known the origin of the pandemic. China says claims it was caused by a leak in a laboratory are not credible.

Democratic Rep. Jim Himes called the bill an “important first step.” “I hope it clears up some of the speculation, some of the rumors that are out there,” he commented.