(Photo: Xinhua)

WASHINGTON, Nov. 14 (Xinhua) -- US President Donald Trump on Thursday asked the Supreme Court to block a subpoena demanding his accounting firm to turn over eight years of his tax returns to Manhattan prosecutors, multiple media outlets reported.

Attorneys for the president asked the Supreme Court on Thursday to let Trump keep his tax returns secret. It's thought to be the first time that a US president's personal financial dealings have made their way to the nation's top court.

Local media expected the case to determine whether any US president has blanket criminal immunity while in office.