POLICING ABORTIONS THROUGH THE IRS…. In January, Nick Baumann took a closer look at the “No Taxpayer Funding for Abortion Act,” and highlighted an outrageous provision that would redefine rape. The language was ultimately removed after the ensuing controversy.

This week, Baumann put the spotlight on another problem with the same law, and this one may be tougher for proponents to change.

Under a GOP-backed bill expected to sail through the House of Representatives, the Internal Revenue Service would be forced to police how Americans have paid for their abortions. To ensure that taxpayers complied with the law, IRS agents would have to investigate whether certain terminated pregnancies were the result of rape or incest. And one tax expert says that the measure could even lead to questions on tax forms: Have you had an abortion? Did you keep your receipt?

In testimony to a House taxation subcommittee on Wednesday, Thomas Barthold, the chief of staff of the nonpartisan Joint Tax Committee, confirmed that one consequence of the Republicans’ “No Taxpayer Funding for Abortion Act” would be to turn IRS agents into abortion cops — that is, during an audit, they’d have to determine, from evidence provided by the taxpayer, whether any tax benefit had been inappropriately used to pay for an abortion.

The proposed law, also known as H.R. 3, extends the reach of the Hyde Amendment — which bans federal funding for abortion except in cases of rape, incest, or when the life of the mother is at stake — into many parts of the federal tax code. In some cases, the law would forbid using tax benefits — like credits or deductions — to pay for abortions or health insurance that covers abortion. If an American who used such a benefit were to be audited, Barthold said, the burden of proof would lie with the taxpayer to provide documentation, for example, that her abortion fell under the rape/incest/life-of-the-mother exception, or that the health insurance she had purchased did not cover abortions.

So, on the one hand, the House GOP wants to undermine the IRS’s ability to actually collect revenue — ostensibly, the agenda’s purpose — but expand the IRS’s power to determine whether specific abortions meet the standards of tax law’s exclusions for rape or incest.

Americans can take some solace in knowing this legislation, while certain to pass the House, has no chance whatsoever of becoming law, at least not in this Congress. But that doesn’t change the fact that House Republicans are not only pushing this odious bill, they’ve also made it one of their top priorities of 2011.

Those who voted for GOP candidates last year because they were hoping for a renewed focus on the economy may not have fully appreciated what they were getting us into.

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Follow Steve on Twitter @stevebenen. Steve Benen is a producer at MSNBC's The Rachel Maddow Show. He was the principal contributor to the Washington Monthly's Political Animal blog from August 2008 until January 2012.