Author: Bart Jansen, USA TODAY

One contentious issue will be whether to call witnesses. Democrats want to call John Bolton and others. But some GOP senators say that’s unnecessary.

Sen. Mitch McConnell rejected a from Democrats that asked for four key witnesses to appear as part of President Donald Trump’s impeachment trial.

The House Judiciary Committee will start the next phase in the Trump impeachment inquiry as it holds its first hearing this week. Here’s what the week looks like:

Former special envoy to Ukraine Kurt Volker told lawmakers he “never conveyed” a linkage between security assistance and investigations to the Ukrainians.

Here are five things to look for as the House Intelligence Committee begins public hearings in the impeachment inquiry of President Donald Trump

What’s up in the House impeachment inquiry in Week 5? The U.S. diplomat who questioned Trump’s withholding military aid from Ukraine as ‘crazy’

Rudy Giuliani, Trump’s personal lawyer, has been subpoenaed for documents with a Tuesday deadline. The Pentagon and budget office also face deadlines.

Business partners Lev Parnas and Igor Fruman helped Rudy Giuliani meet a Ukrainian prosecutor as Trump’s lawyer sought an investigation into Joe Biden.

The House Judiciary Committee was to argue Tuesday a federal judge should release grand-jury evidence behind special counsel Robert Mueller’s report.

What’s happening this week with the House impeachment investigation of President Donald Trump? Subpoenas, depositions, a court hearing and rallies.