Definition: Given a document, generate a short title of the document. The title should convey the main idea/event/topic about which the document is being written. Note that URLs in the text have been replaced with [Link].
Input: A top Democrat launched an investigation Monday into White House senior adviser Jared Kushner's use of private email while serving in the Trump administration.
Rep. Elijah Cummings of Maryland  the ranking member of the House Committee on Oversight and Government Reform  sent a letter to  Kushner  following Politico's report on Sunday detailing the adviser's use of private email while serving in the White House.
 Kushner   President Donald Trump's son-in-law  set up a private email account in December and has used it since to discuss official government business with fellow administration officials  Politico reported.
Though  Kushner 's lawyer said the adviser "uses his White House email address to conduct White House business " he admitted that  Kushner  had utilized a personal email account to discuss government business.
"Fewer than 100 emails from January through August were either sent to or returned by  Mr. Kushner  to colleagues in the White House from  his  personal email account " the lawyer said. "These usually forwarded news articles or political commentary and most often occurred when someone initiated the exchange by sending an email to his personal rather than his White House address."
" Kushner  has adhered to government record-keeping requirements by forwarding all the emails to  his  account " the lawyer added.
Cummings additionally asked  Kushner  to provide the addresses for all private email accounts  he  used to conduct any government business  a list of all the emails  he  either sent or received at those addresses that involved official government business  and information about the security of the domain  he  used.

Elijah Cummings investigating Jared Kushner's use of private email