Comment by newfriend

Illegal aliens are shown to commit more crimes than citizens when time is given to determine immigration status. [1]

> Studies purporting to show low illegal immigrant crime rates in Texas fail to account for the fact that illegal immigrants are not always identified immediately upon arrest. In many cases, illegal immigrants are identified only after they are imprisoned. Given sufficient time for data collection, it appears that illegal immigrants have above average conviction rates for homicide and sexual assault, while they have lower rates for robbery and drugs.

There is also the question of how many illegal aliens actually exist in the US, which severely complicates calculation of rates for their population.

Your pdf is a repost of the exact study (Light) cited here as being flawed.

[1] https://cis.org/Report/Misuse-Texas-Data-Understates-Illegal...