In 2018, the DOJ investigated leaks related to the Russia investigation, targeting lawmakers like Eric Swalwell and Adam Schiff. Using a grand jury, they subpoenaed Apple for data, affecting at least a dozen people connected to the House Intelligence Committee. Such investigations into Congress members are rare. Criticism arose over the DOJ's actions, seen as an abuse of power to target political enemies and protect allies like Roger Stone and Mike Flynn. Adam Schiff called for the Inspector General to investigate these actions, alleging misuse of the DOJ under Trump. The DOJ, Apple, and former Attorney General William Barr did not comment.

How does the text describe the investigation into members of Congress?

What are the implications of the DOJ's actions on democracy as mentioned in the text?