FILE PHOTO - U.S. Senator Elizabeth Warren speaks about her policy ideas with Anand Giridharadas at the South by Southwest (SXSW) conference and festivals in Austin, Texas, U.S., March 9, 2019. REUTERS/Sergio Flores

WASHINGTON (Reuters) - U.S. Senator Elizabeth Warren, a Democratic candidate for president, on Tuesday called for the Federal Aviation Administration to follow several other countries and temporarily ground Boeing Co’s 737 MAX 8, days after a crash in Ethiopia killed everyone onboard one of the planes.

“While we do not know the causes of these crashes, serious questions have been raised about whether these planes were pressed into service without additional pilot training in order to save money,” Warren said in a statement released from her campaign, not her Senate office.