Immigration arrests declined at the end of 2018 as resources were diverted to the border amid a growing influx of asylum seekers.
Authorities claim 34,546 illegal immigrants were taken into custody between October and December of last year.
This comes after 39,328 people were arrested the year prior.
ICE agents claim there have been less arrests because the border has required more attention than previous years due to the large reflux of migrants storming the border.
President Trump declared a national emergency last month, gaining access to $8 billion to to address the humanitarian crisis at the border.
Though a measure halting the declaration passed both the upper and lower chamber, President Trump used his first veto to ensure he would have access to the funding to supply government agencies with critical resources and more agents.