<p>Every one of Chicago’s 22’s police districts will have access to an <a class="Link" href="https://chicago.suntimes.com/news/2021/7/13/22573899/mental-health-first-responder-police-alternative-response-lightfoot-crisis-response-care-911-cpd" >alternate response team </a>to assist nonviolent people with mental health challenges, under a long-awaited expansion unveiled Wednesday that may or may not last.</p><p>For now, Mayor Brandon Johnson is using $5.2 million from the final chunk of federal stimulus funding delivered to Chicago during the pandemic to check another key item off his progressive to-do list.</p><p>After that, the mayor is counting on revenue from his controversial social media tax — and he's assuming the innovative source of revenue not only survives an ongoing court challenge but continues to grow so the program, confined for now to daytime hours on weekdays, can expand.</p><p>If a coalition of the world’s largest tech companies succeeds in overturning the tax — 50 cents per user after the first 100,000 Chicagoans who log onto Snapchat, Reddit, Instagram and other popular sites — the modest expansion could be short-lived.</p><p>“We can’t speculate about what could or couldn’t happen. We’ll cross that bridge when we come to it,” said Griffin Krueger, Johnson's deputy mayoral press secretary. “We’re confident we have a strong [legal] position.