I didn't flag it, but I would guess that this is part of the reason:
"They have also removed all mentions of climate change from the white House website "
As gus_massa points out above, the entire Obama White House website (not just the pages dealing with climate change) has been transferred to the National Archives (not "removed") and has been replaced with a completely new site.
While the web is still new enough that it's hard to argue tradition, Obama did the same thing to Bush II's site, and Bush II did the same thing to Clinton's site (Clinton was the first, so there's no data before that).
It seems to me more like a technical detail whether you are no longer mentioning a topic because you removed it from the previous website or whether you replaced the whole website. In the end the topic is gone in both cases. You can admittedly draw somewhat different conclusions in both cases, in the former case they wanted to see the topic gone, in the later case they may just have forgotten to include the topic.
Anyway flagging the comment seems a needless harsh reaction, reply with a comment pointing out the facts or maybe downvote it if you really believe the comment was made in bad faith.
I didn't mean gone in that sense, I meant gone from the list of topics on the White House website, gone from the list of topics the government wants to be associated with if you want.
If you use the Wayback Machine you should be able to verify that the Obama website didn't have a page on climate (or on lgbt, for that matter) when he first took office - it took years to put one there.
Administrations tend to put up a page at whitehouse.com on issue X when they want to trumpet or otherwise refer to what the administration has DONE about issue X. Since Trump just got elected, he hasn't done anything noteworthy on climate, so there's no page describing what he's done - speeches he's given, bills he's signed, etcetera. Since there's no such page, there's no such topic. Simple as that.
The topics there now seems to be cut-and-paste from his campaign site; it's essentially a placeholder to be filled out later.
"They have also removed all mentions of climate change from the white House website "
As gus_massa points out above, the entire Obama White House website (not just the pages dealing with climate change) has been transferred to the National Archives (not "removed") and has been replaced with a completely new site.
While the web is still new enough that it's hard to argue tradition, Obama did the same thing to Bush II's site, and Bush II did the same thing to Clinton's site (Clinton was the first, so there's no data before that).