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Ari Lamstein


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1 to 5 of 8 total
Posted By Ari Lamstein 04-08-2026 02:40 PM
Found In Egroup: Federal Data Users
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At the last APDU conference I shared an app I built to help people explore changes in U.S. immigration enforcement trends: https://immigration-enforcement.streamlit.app/. Several people mentioned that they appreciated how the app made the data easier to understand and interact with. The app was build ...
Posted By Ari Lamstein 03-16-2026 05:31 PM
Found In Egroup: Federal Data Users
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I wanted to share a project I just wrapped up that may be useful to folks working with ACS data. I built a small Python package that automates something that's normally pretty tedious to do by hand: stitching together multiple years of ACS 1‑year estimates - across multiple related tables - into a clean, ...
Posted By Ari Lamstein 10-06-2025 04:20 PM
Found In Egroup: Federal Data Users
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A few months ago, I shared an app I built to visualize Immigration Enforcement data. One pattern stood out: ICE arrests were up this year, but CBP arrests were down. At the time, I didn't know why. Recently, I spoke with a statistician at DHS who pointed me to a dataset I hadn't worked with before-"CBP ...
Posted By Ari Lamstein 08-11-2025 06:39 PM
Found In Egroup: Federal Data Users
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In the last few years I've created a number of "Data Apps" in Python using the Streamlit framework. The most recent one was the Immigration Enforcement app I shared here a few weeks ago (link). In my experience tools like this are normally used by people who work in tech. That is, analytical types ...
Posted By Ari Lamstein 07-28-2025 01:54 PM
Found In Egroup: Federal Data Users
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In case it interests anyone, I just created a video that goes into more detail about my app that analyzes US Immigration Enforcement Data. It's part of my effort to branch out from "just" writing blog posts and experiment with sharing this work in new formats. If you enjoy it, ...