President Donald Trump engaged in a heated exchange with a White House correspondent Thursday after she challenged his criticism of the Biden administration’s vetting process for the Afghan national suspected of murdering U.S. National Guard member Sarah Beckstrom.

The facts are straightforward. A 29-year-old Afghan national, Rahmanullah Lakanwal, allegedly shot Beckstrom and Staff Sgt. Andrew Wolfe just blocks from the White House on Wednesday in what officials described as a “targeted” attack. Beckstrom, 20, from West Virginia, died from her injuries. Wolfe remains hospitalized in critical condition, “fighting for his life,” according to the president. Lakanwal is in custody, recovering from gunshot wounds inflicted by other National Guard members who responded to the attack.

The CBS News White House correspondent confronted Trump with reports that the suspect had been vetted by both the FBI and Department of Homeland Security before entering the United States from Afghanistan. She questioned why Trump blamed former President Joe Biden for admitting the suspect without proper vetting, citing a Department of Justice Inspector General report claiming there was “thorough vetting” of Afghans brought into the country.

Trump’s response was blunt. “Because they let him in. Are you stupid? Are you a stupid person?” the president said. “Because they came in on a plane along with thousands of other people that shouldn’t be here.”

Here is the logical problem with the reporter’s question: the existence of a vetting process does not equal effective vetting. This is the fundamental disconnect. The Biden administration oversaw the most catastrophic military withdrawal in modern American history in August 2021. The chaotic evacuation from Afghanistan resulted in thousands of individuals being rushed into the United States under “Operation Allies Welcome” with what can generously be described as expedited screening procedures.

Lakanwal entered the country in September 2021, one month after the disastrous withdrawal. The question is not whether paperwork was filed or databases were checked. The question is whether the vetting was sufficient to prevent dangerous individuals from entering American soil. The answer, evidenced by Beckstrom’s death and Wolfe’s critical injuries, is clearly no.

The reporter’s question exemplifies a persistent problem in modern journalism: conflating process with results. A government report claiming vetting was “thorough” means nothing when an individual admitted under that process allegedly commits a targeted attack on American service members in the nation’s capital.

Trump’s broader point stands on solid ground. The Biden administration prioritized speed over security during the Afghanistan withdrawal. Thousands of individuals were admitted to the United States under emergency procedures that bypassed normal immigration safeguards. Whether those procedures technically qualified as “vetting” according to bureaucratic standards is irrelevant when they failed to prevent this tragedy.

The president’s tone may have been sharp, but his underlying argument is sound. When government officials tout their vetting procedures while Americans are murdered by individuals admitted under those very procedures, the procedures have failed. This is not complicated logic.

Sarah Beckstrom was 20 years old. She served her country and died blocks from the White House, allegedly at the hands of someone the previous administration admitted during a withdrawal operation marked by incompetence and haste. These are the facts that matter.

Related: Trump Orders Halt to Afghan Immigration After National Guard Shooting