Rep. Steve King Steven (Steve) Arnold KingTrump, Biden deadlocked in Iowa: poll GOP leader: 'There is no place for QAnon in the Republican Party' Loomer win creates bigger problem for House GOP MORE (R-Iowa) sparred with Sen. Kirsten Gillibrand Kirsten GillibrandSunday shows preview: Justice Ginsburg dies, sparking partisan battle over vacancy before election Suburban moms are going to decide the 2020 election Jon Stewart urges Congress to help veterans exposed to burn pits MORE (D-N.Y.) on Thursday night over the Democratic presidential candidate's call for him to resign, retorting that the odds of his stepping down from Congress were equal to hers of winning the party's nomination to take on President Trump Donald John TrumpFederal prosecutor speaks out, says Barr 'has brought shame' on Justice Dept. Former Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick MORE in 2020.

"Kiersten: [sic] Odds of my resigning are the same as yours of winning the nomination for POTUS: ZERO," King tweeted, taking aim at Gillibrand's pro-choice stance.

Kiersten: Odds of my resigning are the same as yours of winning the nomination for POTUS: ZERO. BTW, the DMR & AP have corrected the erroneous story you linked. You’re Pro-Abortion & Pro-PBA & Pro-Infanticide & believe ProLifers are the moral equivalent of racists & antiSemites. https://t.co/d4snnHVreS — Steve King (@SteveKingIA) August 16, 2019

Gillibrand, responding to King's Thursday tweet, wrote, "You know when you’re getting under Steve King’s skin this much, you’re doing something right."

You know when you’re getting under Steve King’s skin this much, you’re doing something right.



P.s. It’s Kirsten. https://t.co/HcbcTDk0vt — Kirsten Gillibrand (@SenGillibrand) August 16, 2019

The back-and-forth came after Gillibrand on Wednesday called for the embattled nine-term congressman to step down from his position after King questioned whether there would be "any population of the world left" if not for rape and incest throughout history.

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"What if we went back through all the family trees and just pulled out anyone who was a product of rape or incest? Would there be any population of the world left if we did that?" King told a crowd at the Westside Conservative Club. “Considering all the wars and all the rapes and pillages that happened throughout all these different nations, I know that I can't say that I was not a part of a product of that."

King was speaking in Urbandale, Iowa, where he defended anti-abortion legislation he sponsored in Congress that did not have exceptions for rape or incest.

Other Democratic presidential hopefuls, including Sens. Cory Booker Cory Anthony BookerThe movement to reform animal agriculture has reached a tipping point Watchdog confirms State Dept. canceled award for journalist who criticized Trump 3 reasons why Biden is misreading the politics of court packing MORE (N.J.), Bernie Sanders Bernie SandersSirota reacts to report of harassment, doxing by Harris supporters Republicans not immune to the malady that hobbled Democrats The Hill's Morning Report - Sponsored by Facebook - Republicans lawmakers rebuke Trump on election MORE (I-Vt.) and Elizabeth Warren Elizabeth WarrenOvernight Defense: Appeals court revives House lawsuit against military funding for border wall | Dems push for limits on transferring military gear to police | Lawmakers ask for IG probe into Pentagon's use of COVID-19 funds On The Money: Half of states deplete funds for Trump's 0 unemployment expansion | EU appealing ruling in Apple tax case | House Democrats include more aid for airlines in coronavirus package Warren, Khanna request IG investigation into Pentagon's use of coronavirus funds MORE (D-Mass.) called for King's resignation. Members of King's party, including House Republican Conference Chairwoman Liz Cheney Elizabeth (Liz) Lynn CheneyGOP lawmakers distance themselves from Trump comments on transfer of power Graham vows GOP will accept election results after Trump comments Liz Cheney promises peaceful transfer of power: 'Fundamental to the survival of our Republic' MORE (Wyo.), hit the congressman over his remarks.

King sparked bipartisan backlash in January for questioning during an interview with The New York Times how terms such as "white supremacist" and "white nationalist" became "offensive."

The comments were quickly denounced and House Republicans responded by removing King from his positions on the House Judiciary, Agriculture and Small Business committees.