bring in

bring sb/sth <-> in phrasal verb [T]
1    to ask someone to take part in something in order to help with a problem:
?The police had to bring in the FBI to help with their search.
2    to earn or produce an amount of money:
?sales that will bring in more than ? million
3    to officially start a new system, method, or rule for the first time:
?The city council will bring in new regulations to restrict parking.