Vance makes some reasonable points about the role of mental health issues and empowering law enforcement to address gun violence, but he also mischaracterizes his opponents' position and employs a questionable cause fallacy.

1. questionable cause • Vance's statement about illegal guns and the border, while indeed relevant to the broader topic of gun violence, asserts a causal link that is of questionable significance.

The gross majority -- close to 90% in some of the statistics I've seen -- of the gun violence in this country is committed with illegally obtained firearms. ​Thanks to Kamala Harris's open border, we've seen a massive influx in the number of illegal guns run by the Mexican drug cartel...

While its true that most gun crimes involve guns obtained illegally, and while some illegal guns in the U.S. may come from foreign sources, the majority of illegal firearms in the country are domestically sourced.

So the causality that Vance is implying is dubious. He does not provide sufficient data to establish the causality, and its extent is likely to be small compared with crimes committed with domestically sourced guns.

2. straw man • Vance's use of the phrase "open border" simplifies and distorts the actual policies into an easily attacked position that doesn't accurately represent the nuanced approach of the administration.

Thanks to Kamala Harris's open border, we've seen a massive influx...

By labeling it an "open border" policy, it misrepresents the complexity of border management and immigration policy, setting up a simplified argument that can be more readily criticized.

If Vance had instead said "Harris's looser border policies," it would likely not constitute a fallacy because it more accurately reflects the nature of the policy changes without simplifying them into an extreme or easily attacked caricature.

3. loaded language with straw man • By characterizing Walz's position as wanting to "magically wave a wand and take guns out of the hands of bad guys," Vance is creating an extreme caricature of Walz's position, making it easier to dismiss.

The idea that we can magically wave a wand and take guns out of the hands of bad guys, it just doesn't fit with recent experience.

This misrepresentation is a classic example of a straw man argument, where one's opponent's argument is distorted or exaggerated to make it easier to attack.

The use of the term "magically" in Vance's statement is also an instance of loaded language. The word "magically" is emotionally charged and intended to make the opposing argument sound unrealistic, unreasonable, and even fantastical. This use of loaded language helps to exaggerate and dismiss the opposing viewpoint, further contributing to the straw man fallacy.