MPs on the Scottish Affairs Committee have said funding for The Thistle in Glasgow should not come at the expense of other efforts to reduce drug harm.
The three-hour debate into the Labour peer's links to Jeffrey Epstein comes hours before US President Donald Trump, himself embroiled in questions surrounding the disgraced billionaire, lands in the UK for a pomp and ceremony-laden state visit.
Campaigners have welcomed a "momentous" step in the long fight for the bill, but warned MPs not to water the bill down as it passes through parliament.
The prime minister was forced to sack Lord Mandelson as the UK's ambassador to the US last Thursday after details of the peer's relationship with Epstein emerged in the media.
Changes are needed to the UK's energy infrastructure and the way copyright is managed in the UK for the goal to be met. The report comes as US tech companies visit the UK alongside Donald Trump.
Paul Ovenden, who was the director of strategy at No 10, is understood to have left the role on Monday after a number of instant messages from 2017 became public.