Rick Santorum has an op-ed  against marriage equality in the Des Moines Register that is breathtaking in its dishonesty.
In order to target a Republican base that has lurched further and further from reality, he writes about a world that simply doesn't exist.
One of the most easily disproved inaccuracies: He writes that President Obama is refusing to enforce DOMA. That is flat out false; the administration now refuses to defend DOMA in court, but it has made it clear in both word  and deed  that it will continue to enforce the law. While the idea of a president unilaterally declaring a law unconstitutional and simply pretending it doesn't exist plays into the Republican base's deluded image of Barack Obama as a totalitarian dictator, it bears no relation to reality.
If Santorum knows that what he is writing about DOMA is false, he lacks the basic moral qualifications to be president. And if he doesn't know that it's false, he needs to reassure voters that someone whose operation does not engage in even the most rudimentary fact-checking can be trusted to make the critical policy decisions a president must make every day. He also owes a public apology to the American people and to the president.
Similarly, Santorum's description of the arguments made by proponents of marriage equality bears no relationship to reality. He says that equality advocates fail to "make a reasoned case providing evidence about such things as the effects on children, traditional marriage, faith, school curriculum and public health." Among the many items from the reality-based world that the former senator simply pretends don't exist is the federal district court opinion striking down Proposition 8. In great detail, Judge Vaughn Walker's 136-page opinion  goes through the evidence on these and other matters presented both by proponents and opponents of the right to marry. Those sharing Santorum's position had their evidence heard and carefully considered against the evidence presented by equality advocates. The result was that Judge Walker forcefully and persuasively rejected the arguments against marriage equality.
Santorum's distorted depiction of the world may play well with those on the right who ignore any fact contradicting their self-image as heroic freedom fighters under siege. However, the rest of the country would prefer an honest debate of the issues.