Why Trump's White House is embroiled in a hiring crisis

President Trump has yet to nominate anyone for 74% of key executive branch positions. Out of the 558 positions which require Senate confirmation, 415 have no nominee as of Sunday.

Seven people have been announced as nominees but not formally nominated.

But the Trump administration's lag in selecting nominees may not be the only thing to blame for the White House's hiring crisis. Of the 94 formal nominees, the Senate has confirmed only 42 so far.

A number of factors besides the lack of nominees have also contributed to the delay, including: Democrats' opposition to Trump's nominees, some Republicans' unwillingness to work for an administration rocked by controversy, and Trump's reported treatment of administration officials.

Here's a guide to the reasons: