Invocations of "science" in a political debate are almost always arguments from authority. Few participants or listeners will ever examine the evidence for themselves.
And by subtly (and often not-so-subtly) blocking the careers of scientists who express a different view, politicians try to ensure that authority supports their agenda. It's a mechanism of social control that's been used by authoritarian regimes for a hundred years.
And if you think that view makes me "anti-science", you should know that I'm currently a graduate student studying science. I'm very much in favor of fair and painstaking examination of empirical evidence.
I'm against "science" as a political cudgel. I'm against supporting or rejecting theories based on ideology rather than evidence. I'm against politicians and political activists meddling in science or using selective quoting of unsettled science for political ends.