This motion to support the People’s Vote campaign should be rejected for two main reasons.
Firstly, looking at the wider political context, People’s Vote campaigners are playing with fire. As many Labour and Tory MPs have explained, a 2nd referendum could infact severely undermine our democracy - voters have already spoken 3 times on this issue (the 2015 election, the 2016 referendum itself, and the 2017 election) and not only is there no evidence that the public is demanding another vote, it is likely that a large number of people would not accept the legitimacy of any attempt to reverse the decision the electorate already reached.
Furthermore, we should focus on realistic Brexit options. The choice on offer is leaving with the government's Deal, or leaving with no Deal - if you want to keep close links with the EU, it is a better bet to support the Deal on offer, instead of backing a People's Vote campaign which in reality will increase the chance of a No Deal outcome.
Secondly, this isn't something that the Union should be involving itself with. What position you have on Brexit, a 2nd referendum, and related issues are these days just as divisive as what political party you support. The Union wouldn't endorse a political party to vote for at elections, and by the same token, endorsing the People's Vote campaign will lead to resentment and a sense of unfairness by students when our funds are used to support a divisive cause many of us don't support.
Instead, the Union should devote its' resources and time to issues where it can exert more effective pressure and that can actually make a practical difference to all students, whatever their political beliefs.