In State v. Kevin Plain, the African-America defendant challenged his harassment conviction arguing that his right to an impartial jury was violated when 49 potential jurors showed up for jury selection and only 1 was an African-American. His trial took place in Black Hawk County where African-Americans make up 10% of the population. The defendant offered "three practices that he argues caused the underrepresentation of African-Americans in his jury pool:
(1) the failure to update addresses when summonses were returned as 'undeliverable,'
(2) the failure to follow up with jurors who didn’t respond, and
(3) the failure to hold jurors accountable through enforcement proceedings for failing to respond or appear."
In upholding the defendant's conviction, the Iowa Supreme Court found that "[a]ll three of the practices that Plain presents as 'causing' the alleged underrepresentation under the third prong amount to run-of-the-mill practices that the Supreme Court has declined to condemn."
Interesting side note, Paula Hanford Agor, of the National Center for State Courts for Jury Studies testified as a jury expert in this case.