Richard Shiro / AP

Forget the Pope. Donald Trump Is Coming to the Hill

The 2016 GOP frontrunner will be right outside the Capitol, but it’s not clear he has much support inside the building.

A hugely in­flu­en­tial lead­er is com­ing to Wash­ing­ton to give the coun­try a ser­mon about its fu­ture. Two weeks later, Pope Fran­cis will be here too.

Don­ald Trump, per­haps the cur­rent spir­itu­al head of the Re­pub­lic­an Party, will hit Cap­it­ol Hill on Wed­nes­day for a rally op­pos­ing the Ir­an nuc­le­ar deal, which is cur­rently be­ing de­bated in both cham­bers of Con­gress. Trump will be joined by ra­dio per­son­al­ity Glenn Beck, former Alaska Gov. Sarah Pal­in, and one of his rivals for the Re­pub­lic­an pres­id­en­tial nom­in­a­tion, Sen. Ted Cruz, in ad­di­tion­ to oth­er con­ser­vat­ive lead­ers.

Trump’s speech comes as Con­gress be­gins de­bate on a meas­ure to dis­ap­prove of Pres­id­ent Obama’s deal with Ir­an—a res­ol­u­tion which already lacks suf­fi­cient sup­port in the Sen­ate, and likely in the House, to with­stand a cer­tain pres­id­en­tial veto. Al­though a ma­jor­ity of mem­bers in both cham­bers sup­port the dis­ap­prov­al meas­ure, just 41 are needed to fili­buster a fi­nal vote on the meas­ure in the Sen­ate—votes that sup­port­ers se­cured Tues­day morn­ing—while even few­er, just 34 in the Sen­ate and 145 in the House, are needed to up­hold a veto.

For Trump, Wed­nes­day marks his greatest for­ay yet in­to con­gres­sion­al polit­ics, and comes just as Sen­ate Ma­jor­ity Lead­er Mitch Mc­Con­nell will be­gin a talk­a­thon on the Sen­ate floor in which mem­bers will be asked to re­main in their seats and listen to their col­leagues de­bate the meas­ure.

But it’s un­clear wheth­er Trump will meet with mem­bers, aside per­haps from Cruz, while in Wash­ing­ton on Wed­nes­day. A spokes­wo­man for Trump’s cam­paign de­clined to com­ment for this story and Sen. Jeff Ses­sions, who is serving as a con­sult­ant for Trump’s cam­paign on im­mig­ra­tion, would not say Tues­day wheth­er he planned to meet with the can­did­ate dur­ing his Cap­it­ol vis­it.

Sev­er­al Re­pub­lic­an sen­at­ors said they would be too busy with the Ir­an de­bate to at­tend Trump’s speech Wed­nes­day, but Sen. Dav­id Per­due said he would make an ef­fort to be there. The Geor­gia fresh­man said that he has not en­dorsed in the pres­id­en­tial race—and is sup­port­ive of “any Re­pub­lic­an cam­paign”—but that he and Trump’s camps have been in talks to try to sched­ule time for the two to speak.

“Ac­tu­ally, we’re try­ing to talk to­night,” Per­due said Tues­day. “About the cam­paign, about what I hope to in­ter­ject in­to the pres­id­en­tial dia­logue—I’ve had a couple of op­por­tun­it­ies at the na­tion­al level to do that—about our debt, the eco­nomy, how to get people work­ing again, things that a lot of can­did­ates are not talk­ing about right now. And to­mor­row we’re go­ing to be talk­ing about the Ir­an deal. So I’m de­lighted that those people are go­ing to be here to­mor­row.”

Wed­nes­day could be a big day for Cruz, who is head­lining the rally and per­son­ally in­vited Trump to speak, des­pite their op­pos­ing cam­paigns for the pres­id­en­tial nom­in­a­tion. The in­vite—the only one Cruz ex­ten­ded per­son­ally to any speak­er at Wed­nes­day’s rally, ac­cord­ing to The Wash­ing­ton Post—rep­res­ents an­oth­er step for the Texas Re­pub­lic­an in for­ging an al­li­ance with the cur­rent front-run­ner in the hopes of ab­sorb­ing his sup­port­ers if (“when,” Cruz’s team would say) the real es­tate mag­nate exits the pres­id­en­tial race.

Trump’s speech on Ir­an will put him on the same page and just a few yards from some of his oth­er op­pon­ents for the pres­id­en­tial nom­in­a­tion, Sens. Rand Paul and Lind­sey Gra­ham. Gra­ham, a hawk on de­fense is­sues, has feuded with Trump for weeks.

Asked about Trump’s vis­it on Tues­day, Sen. John Mc­Cain, Gra­ham’s highest-pro­file sup­port­er and friend, grim­aced. “Whatever he wants to do is fine with me. I know he has an in-depth know­ledge and back­ground on the is­sue.”

Asked wheth­er he was be­ing sar­cast­ic, Mc­Cain grinned: “Not at all.”