Sounds like Iowa has some unfriendly gun laws that Iowans should work to change.
The issue of a breathalyzer seems to run contrary to the 4th and 5th amendments rather than the 2nd.
Fourth:
The right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated, and no Warrants shall issue, but upon probable cause, supported by Oath or affirmation, and particularly describing the place to be searched, and the persons or things to be seized.
This argument doesn't work so well when driving since driving is considered a "privilege". For that privilege you agree to a breath test, insurance, and a host of other things. If you can compel gun owners, why stop there. Let's breathalyze protesters, voters, and anyone else.
I have no idea why this would fall under the bold portion.
Fifth:
No person shall be held to answer for a capital, or otherwise infamous crime, unless on a presentment or indictment of a Grand Jury, except in cases arising in the land or naval forces, or in the Militia, when in actual service in time of War or public danger; nor shall any person be subject for the same offence to be twice put in jeopardy of life or limb;
nor shall be compelled in any criminal case to be a witness against himself, nor be deprived of life, liberty, or property, without due process of law; nor shall private property be taken for public use, without just compensation.
I would think a decent lawyer should be able to argue that ones own body cannot be a witness against them. Then again maybe not—that's why I am not your attorney
