The High Cost of a Prosecution "Short-Cut": Why Shifting the Burden of Proof Triggers a New Trial

In a criminal courtroom, the "Golden Rule" is simple: the State carries the burden of proof. The defendant is not required to prove their innocence, nor are they required to provide evidence to clear their name.

A recent appellate ruling has reinforced this fundamental right, overturning a conviction for DUI causing property damage after a prosecutor's closing argument crossed the line. The court found that the State harmfully shifted the burden of proof by suggesting the defendant "could have proven his innocence" by taking a breath test.

The Prosecution's Fatal Flaw: Shifting the Burden

During closing arguments, prosecutors are given "wide latitude" to comment on the evidence. However, that latitude ends where the Constitution begins.

In this case, the defendant had exercised his right to refuse a breath-alcohol test. While the fact of a refusal is often admissible to show "consciousness of guilt," the prosecutor took it a step further. The State argued to the jury that:

"The defendant had the opportunity to prove he was sober. If he wasn't impaired, he would have taken the breath test to show you he was innocent."

The Court's Verdict: This is a classic case of shifting the burden of proof. By framing the breath test as a tool for the defendant to "prove his innocence," the State essentially told the jury that the defendant had an obligation to produce evidence.

Proper vs. Improper Argument: Where is the Line?

Navigating the distinction between a "fair comment" and an "unconstitutional argument" is a tightrope walk for attorneys.

Why the Error Wasn't "Harmless"

Not every mistake at trial leads to a reversal. If the evidence of guilt is overwhelming (e.g., a video of the defendant stumbling with a bottle in hand), a court might rule the error was "harmless."

However, in this case, the court was not persuaded that there was "no reasonable possibility" the error contributed to the conviction.

• The Evidence Gap: Without a breath-alcohol reading, the State's case relied on subjective observations of impairment and property damage.

• The Impact: In a "he-said, she-said" scenario between the officer and the defendant, telling the jury that the defendant could have proven his innocence is a powerful—and illegal—narrative.

The Result: A New Trial

Because the prosecutor's comments struck at the heart of the Presumption of Innocence, the court vacated the conviction. The case has been remanded for a new trial, where the State will have to prove its case without relying on the defendant's failure to prove his own innocence.

Key Takeaway for Practitioners

This ruling serves as a stern reminder: the State must win on the strength of its own evidence, not by highlighting the defendant's choice to remain silent or refuse testing. For defense counsel, it underscores the importance of a timely objection when a prosecutor begins to "flip" the burden.