The Democrats believe that Trump, who is the president of the executive branch, is not allowed to discuss anything with the US Attorney General without their permission.
http://www.thegatewaypundit.com/2019/11/here-we-go-dem-senators-seek-docs-on-trumps-alleged-request-for-bill-barr-to-hold-press-conference-about-ukraine/

Realist - Everybody in America is soft, and hates conflict. The cure for this, both in politics and social life, is the same -- hardihood. Give them raw truth.