Sunday shows preview: Republicans on defense as new reports emerge on impeachment

Congressional Republicans once again find themselves on the defensive heading in to the weekend following the publication of text messages of U.S. officials indicating their discomfort with President TrumpDonald John TrumpRouhani says Iran will never seek nuclear weapons Trump downplays seriousness of injuries in Iran attack after US soldiers treated for concussions Trump says Bloomberg is 'wasting his money' on 2020 campaign MORE's conversations with Ukraine's president regarding former Vice President Joe BidenJoe BidenSanders joins Biden atop 2020 Democratic field: poll The Hill's Morning Report - Trump trial begins with clashes, concessions Trump says impeachment lawyers were 'really good' MORE.

Calls for Trump's impeachment only intensified among House Democrats this week following a barrage of reports about Trump's conversations with Ukrainian President Volodymyr Zelensky as well as Trump's own public statements in recent days calling for Ukraine as well as China to open investigations into Biden.

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Texts from multiple State Department officials released late Thursday indicated that Trump's conversation with Zelensky was predicated on the condition of talking about Biden even as many Republicans insisted that Zelensky was not pressured to discuss Biden or open an investigation into Biden, a 2020 candidate for president.

Trump publicly defended his calls for Biden to be investigated by multiple foreign governments including China, a U.S. adversary, on Friday, telling reporters that “when I speak to a foreign leader, I speak in an appropriate manner,” and claiming that his motives were apolitical.

Several Republican lawmakers are set to appear on the Sunday news shows amid the growing scandal, though no White House representatives were booked on any networks. Sen. Ron JohnsonRonald (Ron) Harold JohnsonBiden campaign releases video to explain 'what really happened in Ukraine' Trump lawyers urge senators to swiftly acquit Trump in impeachment trial Hillicon Valley: Barr asks Apple to unlock Pensacola shooter's phone | Tech industry rallies behind Google in Supreme Court fight | Congress struggles to set rules for cyber warfare with Iran | Blog site Boing Boing hacked MORE (R-Wisc.), who has so far supported Trump publicly, will appear on NBC's "Meet the Press" while Rep. Jim JordanJames (Jim) Daniel JordanCheney's decision not to run for Senate sparks Speaker chatter The Hill's Morning Report - Trump trial begins with clash over rules This week: Raucous rules fight, opening arguments in impeachment trial MORE (R-Ohio) was set to appear on ABC's "This Week" opposite Rep. Hakeem JeffriesHakeem Sekou JeffriesSenate rejects subpoenaing Mulvaney to testify in impeachment trial Jeffries: Even Nixon didn't block White House aides from testifying White House appoints GOP House members to advise Trump's impeachment team MORE (D-N.Y.), a top ally of Speaker Nancy PelosiNancy PelosiOvernight Health Care: Justices won't fast-track ObamaCare case before election | New virus spreads from China to US | Collins challenger picks up Planned Parenthood endorsement Why Senate Republicans should eagerly call witnesses to testify Trump health chief: 'Not a need' for ObamaCare replacement plan right now MORE (D-Calif.).

Sen. Roy BluntRoy Dean BluntSenate Republicans muscle through rules for Trump trial McConnell keeps press in check as impeachment trial starts What to watch for as Senate organizes impeachment on day one MORE (R-Mo.), another opponent of Democrats' impeachment inquiry, is set to appear on CBS' "Face the Nation," while Rep. Chris StewartChristopher (Chris) Douglas StewartGOP lawmaker offering bill protecting LGBTQ rights with religious exemptions House GOP wants Senate Republicans to do more on impeachment How House Republicans have stayed unified on impeachment MORE (R-Utah), who has called the whistleblower complaint "concerning" but has refused so far to support the inquiry will appear on "Fox News Sunday."

Here's the full lineup for the Sunday shows, according to the Associated Press:

NBC’s “Meet the Press": Sens. Ron Johnson (R-Wis.) and Chris MurphyChristopher (Chris) Scott MurphySenate Republicans muscle through rules for Trump trial Trump health chief: 'Not a need' for ObamaCare replacement plan right now Democrats: McConnell impeachment trial rules a 'cover-up,' 'national disgrace' MORE (D-Conn.)

ABC's "This Week": Reps. Jim Jordan (R-Ohio) and Hakeem Jeffries (D-N.Y.)

CBS's "Face the Nation": Sen. Roy Blunt (R-Mo.), Reps. Jim Hines (D-Conn.) and Eliot EngelEliot Lance EngelHouse Democrats may call new impeachment witnesses if Senate doesn't Overnight Defense: Book says Trump called military leaders 'dopes and babies' | House reinvites Pompeo for Iran hearing | Dems urge Esper to reject border wall funding request House panel reinvites Pompeo to deliver Iran testimony MORE (D-N.Y.)

"Fox News Sunday": Reps. Val DemingsValdez (Val) Venita DemingsWhite House appoints GOP House members to advise Trump's impeachment team Schiff huddles in Capitol with impeachment managers House Democrats may call new impeachment witnesses if Senate doesn't MORE (D-Fla.) and Chris Stewart (R-Utah)

CNN's "State of the Union": GOP presidential candidates former Gov. Mark SanfordMark SanfordTrump challenger Bill Weld rules out 2020 independent bid Judge throws out lawsuit against South Carolina GOP for canceling 2020 primary The Hill's Campaign Report: Late bids surprise 2020 Democratic field MORE (R-S.C.) and former Rep. Joe WalshJoe WalshWalsh plans protest at RNC headquarters over 'nakedly anti-Democratic' primary cancellations Pelosi announced as lead guest on season premiere of 'Real Time with Bill Maher' Rep. Collins says Democrats are 'in love with terrorists,' 'mourn Soleimani' MORE (R-Ill.), Democratic presidential candidate Sen. Amy KlobucharAmy Jean KlobucharSanders joins Biden atop 2020 Democratic field: poll The Hill's Morning Report - Trump trial begins with clashes, concessions Sanders holds four-point lead on Biden in new California poll MORE (D-Minn.).