The Republican establishment seems to have finally decided to rally around Texas Sen. Ted Cruz in an effort to stop businessman Donald Trump from winning the party's nomination for president. However, as comedian Jimmy Kimmel points out, the two candidates share a curious amount of common ground.

On Wednesday's episode of ABC's "Jimmy Kimmel Live," the host introduced an attack ad he claimed was produced by Mitt Romney in support of Ted Cruz as part of the push to halt Trump's momentum. The parody video features a side-by-side comparison of the two candidates' policy proposals, revealing some not-so-shocking similarities. 

"This primary season Republicans need to stand up to Trumpism by voting for Ted Cruz," said the video's Romney-impersonating narrator. "The differences are clear, Donald Trump wants to build a wall and deport 11 million immigrants — so does Ted Cruz."

The fake ad goes on to compare Trump and Cruz's identical stances on the economy, gun control, Obamacare and terrorism. 

"Ted Cruz has called for carpet-bombing terrorists until the sand glows in the dark, while Trump has no position on whether the sand should glow or not," joked the narrator. 

The ad ends with an ironic text disclaimer: "Paid for by Americans for Trump, but not that Trump."

Kimmel's fake ad, as well as a truckload of real ones, has not done much to slow Trump's progress towards the 1,237 delegates he needs to secure the GOP presidential nomination. After a win in the Arizona primary Tuesday, Trump now leads the GOP field with 739 delegates. Cruz is a distant second with 465 delegates, while Ohio Gov. John Kasich lags with 143 delegates. 

Still, Republican leaders continue to unite around Cruz as a last-ditch effort to keep Trump from taking control of the party. On Wednesday, former candidate and former Florida Gov. Jeb Bush became the latest GOP leader to give Cruz his endorsement. Cruz is “a consistent, principled conservative who has demonstrated the ability to appeal to voters,” Bush told reporters.