There's an old saying that you can tell when a politician is lying because his lips are moving. This is highly defamatory of politicians of course, but it seems to be a fact that when a politician's lips are moving and he is talking about science he is speaking either from ignorance or political ideology and expediency. I expressed my concern about this in Australasian Science magazine
One of the nice things about science is that scientific facts are true whether you believe them or not. (I know, there are no "facts" in science, just hypotheses which are strongly supported by all the evidence so far available, but "scientific facts" is a convenient shorthand way of saying this.)
This has not stopped legislators in various parts of the world trying to pass laws which either refute science or simply ignore it.