I know how to use BOLD too. This is from Wiki:
"The number of permits revocations is typically small. The grounds for revocation in most states, other than expiration of a time-limited permit without renewal, is typically the commission of a gross misdemeanor or felony by the permit holder. While these crimes are often firearm-related (including unlawful carry), a 3-year study of Texas crime statistics immediately following passage of CHL legislation found that the most common crime committed by CHL holders that would be grounds for revocation was actually DUI, followed by unlawful carry and then aggravated assault. The same study concluded that Texas CHL holders were always less likely to commit any particular type of crime than the general population, and overall were 13 times less likely to commit any crime."
Source: Concealed carry in the United States