Hillary Clinton: 'Impeachable offenses committed on national television still count'

Hillary ClintonHillary Diane Rodham ClintonState cites 38 people for violations in Clinton email review Trump campaign to hold rallies in Mississippi, Kentucky Biden struggles to reverse fall MORE called out President TrumpDonald John TrumpFlorida GOP lawmaker says he's 'thinking' about impeachment Democrats introduce 'THUG Act' to block funding for G-7 at Trump resort Kurdish group PKK pens open letter rebuking Trump's comparison to ISIS MORE on Twitter for telling reporters that Ukraine and China should investigate former Vice President Joe BidenJoe BidenTrump knocks Romney as 'Democrat secret asset' in new video Giuliani asked State Dept. to grant visa for ex-Ukraine official at center of Biden allegations: report Perry won't comply with subpoena in impeachment inquiry MORE and his son Hunter Biden.

"Someone should inform the president that impeachable offenses committed on national television still count," she tweeted.

Clinton's tweet was in response to the president's encouragement of the two countries to investigate Biden and his son based on unsubstantiated assertions of corrupt behavior involving both countries.

“I would think that if they were honest about it they’d start a major investigation into the Bidens,” Trump said to reporters Thursday.

President Trump is already under scrutiny for asking Ukraine to "look into" Biden in a July 25 phone call with President Volodymyr Zelensky days after withholding military aid to the country.

News of the call blew up when Congress requested a whistleblower report that described the incident, which later prompted House Speaker Nancy PelosiNancy PelosiCummings to lie in state at the Capitol House Republicans 'demand the release of the rules' on impeachment Overnight Health Care — Presented by National Taxpayers Union —Dem wants more changes to Pelosi drug pricing bill | Ebola outbreak wanes, but funding lags | Johnson & Johnson recalls batch of baby powder after asbestos traces found MORE (D-Calif.) to launch an official impeachment inquiry.