The Immigration Court (which is part of the Executive Branch BTW) and detention system wad screwed up long before Trump took office. I agree it needs reform. Jon Oliver did a recent segment on it.
Likewise the entire U.S. immigration system needs complete reform.
Sorry but no. Obama had immigration courts moving faster than ever due to prioritizing criminals. Trump is arresting people at schools without meaningful criminal histories, with roots in the community. These people take much longer to process.