With a federal change expected to lead to a surge in migrants crossing the country’s southern border, Gov. Ron DeSantis on Wednesday signed a controversial bill that targets illegal immigration. The bill (SB 1718), which the Republican-controlled Legislature passed during the session that ended last week, includes stepping up requirements on businesses to check the immigration status of workers, cracking down on people who bring undocumented immigrants into Florida and collecting data about whether hospital patients are in the country legally. It is part of a series of steps that DeSantis and other Republican leaders have taken in recent years aimed at undocumented immigrants.