She was a research assistant to George Bunn of the University of Wisconsin Law School from 1968 to 1969, and for the American Bar Association Project on Minimum Standards of Criminal Justice from 1970 to 1971.
[1] In 2010, Crabb ruled in a suit that the Freedom From Religion Foundation filed in 2008 against the Obama administration that the National Day of Prayer is unconstitutional.
[2] This ruling was reversed by the U.S. Court of Appeals for the Seventh Circuit in 2011, which found that the plaintiffs in the suit lacked standing to sue.
[3][4] In 2013, Crabb ruled in another suit, Freedom from Religion Foundation v. Lew, that the Internal Revenue Code's "clergy housing allowance exclusion" or "parsonage exemption" (providing that clergy members' housing allowance were exempt from federal income tax) was unconstitutional; the Seventh Circuit vacated this ruling, finding that plaintiffs lacked standing.
[5][6] In 2014, Crabb ruled in the case Wolf v. Walker that Wisconsin's ban on same-sex marriage (in its state constitution and statutes) was an unconstitutional violation of due process and equal protection.