Theresa May’s government will call on British lawmakers to “trust the people” who voted for Brexit as it seeks to win their backing for a draft law to initiate the U.K.’s formal departure from the European Union. The lower house of Parliament will begin on Tuesday to debate a 137-word bill that gives May permission to start the legal mechanism by which the U.K. will leave the bloc. Brexit Secretary David Davis, who will kick off a scheduled five days of discussions in the House of Commons over the next two weeks, makes the case that the issue is straightforward. Read why the Article 50 Bill is a headache for May even as it’s sure to pass Lawmakers in London will be considering a “very simple question: do we trust the people or not?” Davis said in an e-mailed statement Monday. “We asked the people of the U.K. if they wanted to leave the EU; they decided they did.” May was hoping to bypass Parliament and start divorce talks with the bloc without having to involve lawmakers. Instead, the U.K. Supreme Court ordered her to draft legislation to authorize the triggering of Article 50 of the Lisbon Treaty. Last week, the government complied, keeping the bill short with a view to speeding the process along. That hasn’t stopped opposition lawmakers from proposing more than 130 amendments that fill an 85-page document. The premier wants to pull the trigger by March 31. On Monday, the government said it hopes the bill will complete its parliamentary journey with passage through the upper, unelected House of Lords on March 7. That would potentially allow May to begin the Article 50 process at the EU summit on March 9. No Return “It is not a bill about whether or not the U.K. should leave the EU, or how it should do so,” said Davis. “It is simply about implementing a decision already made, a point of no return already passed.” The law is unlikely to be blocked, as the main opposition Labour Party has pledged to support it. That won’t stop some from trying to influence May’s approach to the Brexit negotiations by stretching out proceedings and seeking some concessions. For example, among the Labour amendments, there will be a demand to secure “full tariff- and impediment-free access to the single market” and a requirement for May to report back to lawmakers every two months during the negotiations. Yet the ultimate outcome—Parliament clearing the way for May—is a foregone conclusion even for one of the more vocal supporters for staying in the 28-nation bloc. “I have no doubt at all that the House of Commons, and following it the House of Lords, will vote to trigger Article 50, because it is essentially about whether you respect the outcome of the referendum or not,” Hilary Benn, the head of the main panel of lawmakers scrutinizing the government’s Brexit policy, said in a Bloomberg Television interview on Monday. It’s “unlikely” Britain will remain in the single market, he conceded, but it’s worth trying to preserve “as much access as possible” to it.