"under the spotlight" is correct and usable in written English. You can use it when you want to describe a situation where someone is being focused on or examined closely. For example: "The mayor's controversial decision was put under the spotlight during the press conference.".
Put it under the spotlight.
Madrid also came under the spotlight.
Peer review is also under the spotlight.
THE big credit-rating agencies are under the spotlight again.
You came into the league under the spotlight.
Its fiscal privileges have been put under the spotlight.
Mirant, another big trader, is also under the spotlight.
Thanks to Ludwig my first paper got accepted! The editor wrote me that my manuscript was well-written
Listya Utami K.
PhD Student in Biology, Bandung Institute of Technology, Indonesia