Last month American custom agents prevented entry into the country by the founder of the Syrian humanitarian group, White Helmets. He was set to receive a humanitarian award from InterAction, an NGO based in Washington, DC.
However, he had a Muslim name.

Just a few months before this, American custom agents waved through Labib al Nahhas, foreign affairs director for the Islamist fighting group Ahrar al Sham. He also had a Muslim name, but he wasn't a humanitarian. He was a terrorist.

A senior figure from a Syrian rebel group with links to al Qaida was allowed into the United States for a brief visit, raising questions about how much the Obama administration will compromise in the search for partners in the conflict.
His previously undisclosed visit is a delicate matter for both sides – the conservative Salafist insurgents risk their credibility with even perceived ties to the United States, and the U.S. government risks looking soft on screenings by allowing entry to a member of an Islamist paramilitary force.

To be fair, Ahrar al Sham is not blacklisted as a terrorist group. That being said, the only reason that they aren't blacklisted is because the Obama Administration has deliberately blocked Russian attempts to do so.

Ahrar al-Sham is an ultra-orthodox Salafist group and has fought as part of a military alliance including the al Qaeda-linked Nusra Front, which was not part of a cessation of hostilities agreement brokered in February.
Ahrar al-Sham, whose late leader fought alongside Osama bin Laden, last year denied sharing al Qaeda's ideology or having organizational ties to the group.

Russia didn't give up. They urged us to join them in bombing al-Qaeda. We turned them down.

This is what Freedum Fighters look like.

The Obama Administration responded to Russia's attempts at isolating these al-Qaeda allies by threatening Damascus, Moscow and Tehran.

Secretary of State John Kerry warned Syria’s government and its backers in Moscow and Tehran on Tuesday that they face an August deadline for starting a political transition to move President Bashar Assad out, or they risk the consequences of a new U.S. approach toward ending the 5-year-old civil war.

What "new approach" is this?

More feasible might be U.S. allies like Saudi Arabia giving the rebels new weapons to fight Assad, such as portable surface-to-air missiles.

Oh goody. Giving MANPADS to al-Qaedas allies.
What could go wrong?
For instance, consider our support for the Syrian Kurds, support that includes visits by General Joseph Votel, the commander of U.S. Central Command. Nothing bad could come from that.

General Salim Idris, the former FSA chief of staff, told VOA he welcomed any defeats inflicted on IS, but said the U.S.-led coalition risks building up deeper sectarian problems in Syria because of its support for the YPG, the armed wing of the Democratic Union Party, or PYD, which wants autonomy for the Kurds in northern Syria.
As the SDF moves against villages and towns that are traditionally Arab, the seeds for conflict are being sown, he warned. He says the Arab element being crafted onto the SDF is seen as being just cosmetic by most Sunni Arabs. “The Arab fighters are just camouflage,” Idris said. “The SDF is the YPG, which collaborates with anyone — Assad, the Russians, the Americans — when it suits its purposes,” he added.

The YPG only fights ISIS....except when it doesn't.

In the weeks before ISIS seized Mosul, the Kurdistan Regional Government (KRG) apparently supplied some weaponry, like Kornet anti-tank missiles, to ISIS in order to weaken the central government with whom [President of the Iraqi Kurdistan Region] Masoud Barzani was locked in a political dispute.

Except when it fights against Assad.
Or when the YPG fights against Pentagon-supported FSA rebels.

Two Syrian Kurds were shot dead by a former member of the Free Syrian Army (FSA) earlier this month, in what the executioner said was a response to an incident last month in which the Kurdish People's Protection Units (YPG) killed around 50 FSA fighters and transported them back to Kurdish territory in an open-top trailer.

OK. So thing with the Kurds might be more complicated than you've been told.

"It's very strange, and I cannot understand it."
- Ahmed Othman, commander of one U.S.-backed rebel group in Syria regarding U.S. policy

Not only is this not the first time that America's foreign policy stopped making sense, but it's not the first time that we've armed both sides of this war.

The fighting has intensified over the past two months, as CIA-armed units and Pentagon-armed ones have repeatedly shot at each other as they have maneuvered through contested territory on the northern outskirts of Aleppo, U.S. officials and rebel leaders have confirmed.

Fortunately our relations with Baghdad are simple, right?

On March 12, US Consul General Steve Walker visited Al-Sadr Teaching Hospital in Basra to pay his respects to wounded members of the Popular Mobilization Units. The visit marked the first time a US official has publicly met these troops....
Walker made it clear that the trip was not just a courtesy visit. Accompanied by TV stations such as the US-based Alhurra, which broadcast the visit and his remarks in Arabic, Walker said, "The US recognizes the important contribution of the Popular Mobilization Units under the command of Prime Minister [Haider al-Abadi], and most of the Popular Mobilization troops came from the south. This is why I would like to express my condolences to the people of Basra and the south who have lost their loved ones or friends in the war against the Islamic State."

Let's be clear about a few things:
1) Several of these Popular Mobilization groups are listed as terrorist groups by the State Department
2) All of them have killed American soldiers

If we can overlook whether our allies are terrorists who've killed Americans, what can't we overlook?