As federal immigration agents surge into communities and detain people, the number of cases filed by those claiming their detention is illegal has risen to historic highs. ProPublica is tracking the volume of these cases, known as habeas petitions, as they overwhelm legal advocates and government attorneys.Immigrants filed more habeas cases in the first 13 months of the second Trump administration than in the past three administrations combined, including his first.Do you work or have you worked at an immigration