Attorney General William P. Barr will gather information for a Justice Department inquiry that Mr. Trump hopes

Attorney General William P. Barr gather information for a Justice Department inquiry that Mr. Trump hopes will discredit the Mueller investigation, according to two American officials with knowledge of the call.

The White House restricted access to the call’s transcript to a small group of the president’s aides, one of the officials said, an unusual decision that is similar to the handling of a July call with the Ukrainian president that is at the heart of House Democrats’ impeachment inquiry into Mr. Trump. Like that call, the discussion with Prime Minister Scott Morrison of Australia shows the extent to which Mr. Trump sees the attorney general as a critical partner in his goal to show that the Mueller investigation had corrupt and partisan origins, and the extent that Mr. Trump sees the Justice Department inquiry as a potential way to gain leverage over America’s closest allies.

And like the call with the Ukrainian president, Volodymyr Zelensky, the discussion with Mr. Morrison shows the president using high-level diplomacy to advance his personal political interests.

President Trump initiated the discussion in recent weeks with Mr. Morrison explicitly for the purpose of requesting Australia’s help in the Justice Department review of the Russia investigation, according to the two people with knowledge of the discussion. Mr. Barr requested that Mr. Trump speak to Mr. Morrison, one of the people said. It came only weeks after Mr. Trump seemed to make military aid to Ukraine contingent on Mr. Zelensky doing him the “favor” of helping Mr. Barr with his work.


A Justice Department spokeswoman declined to comment. A White House spokesman did not immediately respond to a request for comment, nor did a spokesperson for the Australian prime minister.

In making the request, Mr. Trump was in effect asking the Australian government to investigate itself.