It's looking better, but Ursula von der Leyen still doesn't know if she'll take office on December 1.

The European Parliament on Thursday confirmed replacements for two of the three nominees for the new Commission that they had rejected after an earlier round of hearings last month.

They approved French businessman Thierry Breton for an expansive portfolio overseeing the internal market, industrial policy, defense and space, and Romanian MEP Adina-Ioana Vălean for the transport post. But MEPs refused to approve the Hungarian nominee, Olivér Várhelyi, to be commissioner for neighborhood and enlargement policy, insisting that he answer additional written questions by Monday.

Parliament's refusal to give Várhelyi a green light leaves von der Leyen, the Commission president-elect, in continuing limbo for at least a few more days, though her transition team continued to express cautious confidence that Várhelyi would be approved and that the entire Commission could be voted into office by Parliament during a plenary on November 27.

"After today's hearings, there's a certain sense that things are starting to take shape, with all due regard for institutional processes," von der Leyen's spokesman, Eric Mamer, said.

"Under Boris Johnson, Britain's reputation in Europe lies in tatters. We should be leading in Europe, not leaving" — Caroline Voaden, leader of the Lib Dem group of MEPs

But even as von der Leyen's team voiced growing optimism that she would finally take control of the executive suite in the Berlaymont at the start of next month, officials across the EU institutions were scrambling to deal with yet another uncertain variable. The U.K. government wrote to inform von der Leyen that it would not put forward a Commission nominee until after a national election on December 12 — despite London's commitment to do so as part of the deal last month that extended the Brexit deadline to January 31.

On Thursday evening, Commission officials announced that they had launched an infringement procedure against Britain, essentially the start of a long legal process intended to force London to meet its obligation. But it was largely a legal formality given that infringement proceedings can typically take many years to yield a result, and U.K. Prime Minister Boris Johnson is still aiming for his Conservative Party to win the election and take the U.K. out of the EU.

In addition to the infringement process, EU lawyers were scrambling to reach consensus on steps that could be taken to allow the von der Leyen Commission to take office with the British seat empty, while insulating the EU from any legal challenges to the Commission's legitimacy. Such claims theoretically could create a court challenge to any legislation, regulation or other action taken by the Commission, though officials expressed confidence that they would find a work-around.

One Commission official said that the immediate goal is to build the strongest possible legal case, to demonstrate to officials in all of the EU institutions that every conceivable step had been taken in order to press the Brits to put forward their nominee. If London continues to balk, the official said, the expectation is that the institutions would have confidence to take any further legal or administrative steps needed to authorize the Commission to take office without a British commissioner.

Many EU officials said they were hardly surprised by London's position.

But Caroline Voaden, leader of the Liberal Democrat group of MEPs, seized the moment to slam Johnson for failing to keep his commitment.

"Under Boris Johnson, Britain's reputation in Europe lies in tatters. We should be leading in Europe, not leaving," Voaden said. "A U.K. commissioner would ensure we are treated as equal partners as an EU member state and fully represented in Ursula von der Leyen's new Commission. Boris Johnson should urgently consult with other parties and propose a candidate capable of furthering the interests of the EU as a whole."

While much of the focus in Brussels shifted to the British question, officials are also not taking the unfinished business in Parliament for granted.

Várhelyi's confirmation was blocked after a surprise rebellion by MEPs from the center-left Socialist & Democrats group and from the liberal Renew Europe group, who joined with others to block the nominee after a three-hour hearing in the Foreign Affairs Committee.

Officials in Parliament, however, said they still expect Várhelyi would be approved after answering the additional questions demanded by the S&D and Renew, as well as MEPs from the Greens and the United Left/Nordic Green Left.

Several MEPs across the political groups expressed growing exhaustion with the confirmation process and a desire to get the new Commission in place so that legislative work could restart in earnest.

Many MEPs had voiced misgivings about giving authority for neighborhood and enlargement policy to Hungary, given Prime Minister Viktor Orbán's pattern of disregard for many foundational EU principles of democracy and rule of law.

But while the MEPs were insisting on further statements from Várhelyi intended to assure them of his commitment to act independently of Orbán, Parliament officials acknowledged that there was not much reason to reject Várhelyi other than his nationality. Currently Hungary's ambassador to the EU, Várhelyi is a career civil servant with no formal affiliation to Orbán's Fidesz party.

And while he is nonetheless viewed as an Orbán loyalist, any replacement nominee would also come from Orbán, so rejecting Várhelyi would serve little purpose other than to further delay the investiture of the new Commission.

Several MEPs across the political groups expressed growing exhaustion with the confirmation process and a desire to get the new Commission in place so that legislative work could restart in earnest. But they also said that given Hungary that is facing an Article 7 disciplinary procedure by Parliament for violating EU principles, they could not simply wave through Orbán's nominee, who will be responsible for upholding core EU principles and values in discussions with countries seeking membership in the bloc.

Christian Ehler, a German MEP from the center-right European People's Party, said he believes his colleagues in other groups were sending a political message by demanding further answers from the Hungarian, but that he did not expect they were prepared to vote down the entire Commission as a result.

Ilhan Kyuchyuk, a Bulgarian MEP from the liberal Renew Europe group, said that Várhelyi had demonstrated sufficient independence throughout his career. “Olivér Varhelyi is a career diplomat, who most recently served as Hungary's EU ambassador in Brussels, but he also worked as an EU civil servant in the European Commission — before Orbán came to power," Kyuchyuk said. "During the hearing he said he would take no instruction from any government or institutions and he would defend the EU position by acting in a completely independent way."

Kyuchyuk added, "I am confident that the launch of the written procedure will bring the expected answers for the major political groups to reach the necessary majority."

Breton, the French nominee, had been expected to face tough scrutiny over potential conflicts of interest given his long experience in business. But in the end, he appeared to skate through Thursday's hearing with relative ease.

The approval of Breton came as a relief to Paris, which had reacted furiously to the rejection of its original nominee for the post, Sylvie Goulard.

“It is very good news," an Elysée official said. "He will be responsible for an essential portfolio for the European sovereignty agenda: digital, industrial policy, defense and space."

"We hope the Commission will be able to start work on December 1 and implement Ursula von der Leyen’s ambitious project," the official added.

Lili Bayer, Laura Kayali, and Rym Momtaz contributed reporting.

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