As aviation industry leaders meet with President Trump Thursday morning, pilot leaders are urging him to overturn an Obama administration ruling that enables an Ireland-based Norwegian airline to serve the U.S.

"President Trump has used this strong positive rhetoric with regard to labor issues," said Tim Canoll, president of the Air Line Pilots Association, which represents about 55,000 pilots at 32 airlines. "It really encourages us and gives us hope that this president gets our issues. There is a great deal of trust that this president will fulfill his promise."

Canoll and other ALPA leaders spoke Wednesday at a news conference where they urged Trump to reverse a ruling, made in the Obama administration's final days, allowing Norwegian Air International to join affiliate Norwegian Air Shuttle in serving the U.S.

Last month, aviation labor groups including ALPA and the Transportation Trades Department filed a lawsuit arguing that the decision should be overturned because it violates labor protections contained in U.S.-European Air Transport agreements. Setting up in Ireland enables the carrier to avoid Norwegian labor laws, the unions argued.

The effort is complicated because White House press secretary Sean Spicer spoke this week in support of Norwegian Air International.

Spicer said Norwegian Air International flying benefits the U.S. in terms of jobs and aircraft manufacturing, since the carrier flies Boeing (BA - Get Report) jets.

"There is a huge economic interest that America has in that deal right now," Spicer said. "We are talking about U.S. jobs both in terms of the people who are serving those planes and the person who is building those planes."

Canoll said, "I heard the press secretary's comments {but} President Trump has not spoken on the issue."

Additionally, Todd Insler, chairman of the 13,000-member ALPA chapter at United (UAL - Get Report) , noted that Norwegian is already flying Boeing jets to the U.S.

Allowing Norwegian Air International "isn't supporting any jobs," he said. {And} allowing a subsidiary doesn't change the parent company's opportunity to buy American products."

"President Trump galvanized millions of Americans with the simple idea that we should put America first," Insler said. "We're all behind that. We support keeping jobs here in America and we believe President Trump will {keep} his commitment to put American jobs first."

Norwegian Air spokesman Anders Lindstrom said, "It would make no sense for the new president to overturn the DOT's approval of NAI {because} Norwegian invests more in the American economy and creates more American jobs than any other foreign airline."

Additionally, Lindstrom said, Norwegian "fully complies with the EU-US Open Skies agreement and underlines exactly what it was designed for: to foster competition among airlines," while also supporting 100,000 jobs at Boeing through orders for more than 100 Boeing aircraft.

With CEOS from several carriers scheduled to meet with Trump on Thursday, Insler said he has the backing of United's management team in opposing Norwegian expansion. "I've been very vocal on this," he said. "That's one reason they haven't had to be. Management wants a level playing field."

Delta, United and American have opposed Norwegian Air International in filings, but the carriers have been more vocal in opposing rapid U.S. expansion by the three subsidized Middle East carriers.

Canoll said the issues are related because "both are examples of trade agreements that are not being enforced."

Middle East carriers are subsidized, in violation of Open Skies agreements, he said, while Norwegian Air International fails to observe labor protections.

This article is commentary by an independent contributor. At the time of publication, the author held no positions in the stocks mentioned.