Homeland Security Secretary Alejandro Mayorkas wants to crack down on illegal immigration Specifically, he wants to criminally prosecute more illegal immigrants and target sanctuary cities who refuse to cooperate with Immigration and Customs Enforcement 'I see cases now where we apprehend and remove individuals that I think need to be prosecuted criminally,' Mayorkas told ICE employees during a virtual town hall on Friday Also said President Joe Biden is considering restarting construction on Donald Trump's southern border wall Resumed construction would help fill 'gaps in the wall,' Mayorkas said Biden is facing a massive influx of migrants arrivals, leading to overcrowding at detention facilities