U.S. President Barack Obama sent a letter to Iran's leader Ayatollah Ali Khamenei last month, and House Speaker John Boehner is not happy about it, according to The Wall Street Journal. The letter reportedly outlined a mutual interest in pushing against the Islamic State.

"I don't trust the Iranians, I don't think we need to bring them into this," Boehner said, according to The Wall Street Journal.

White House Press Secretary Josh Earnest told reporters that while it seems that the president is having clandestine talks with Iran about the Islamic State, the president also has unpublicized meetings with Congress about the terrorist group, so no one is being left out.

"It is not in the interest of Iran or, frankly, anybody else in this region of the world to have this extremist group rampaging across the countryside carrying out terrible acts of violence," Earnest said, according to The Wall Street Journal.

While Iran has "a pretty clear interest" in the fight against ISIS, Earnest said Iran's worldwide reputation may make working together difficult, which was included in Obama's letter, according to The Wall Street Journal.

Boehner questioned the letter as well as talks regarding the suspected nuclear weapon program in Iran. Iran denies those allegations, according to The Wall Street Journal. The deadline for international agreement on nuclear programs is Nov. 24.

"I would hope that the negotiations that are underway are serious negotiations, but I have my doubts," Boehner said, according to The Wall Street Journal.

"At the end of the day, the president wants to be able to say he made every effort he could to get an acceptable negotiation," Representative Adam Schiff said, according to The Wall Street Journal.

Schiff does not expect the Ayatollah "to be moved by any personal communication or appeal," according to The Wall Street Journal.