Months after construction began, much about Homeland Security’s $25-million tent courts in South Texas remains a mystery, even to lawyers who expect to represent their migrant clients as soon as this week. What day the hearings will begin, where lawyers should file paperwork and even whether attorneys can meet their clients beforehand, all remain unanswered. At least 20 courtrooms are expected to process 200 to 250 people a day. The tent court in Brownsville is expected to handle around 720 migrants a day.