Background: The OBBBA and the absence of legislative history for spaceport bonds
When Congress enacted the One Big Beautiful Bill Act on July 4, 2025, it included a provision allowing tax-exempt private activity bond financing for spaceports. What Congress did not include was any sort of legislative history adding any additional color to the meaning of the statute. There are many examples of tax-exempt bond provisions of varying types where Congress left extensive legislative history that forms a critical part of the understanding of the underlying provisions and shapes the way that practitioners implement them in actual transactions. In many cases, the legislative history provides the basis of Treasury regulations or other guidance that codify that history. Not so with spaceport bonds (other than a general supporting statement on the bill by one of its sponsors, Rep. Neal Dunn, on a Ways & Means Member Day Hearing on January 22, 2025, a few months before the provision became law). The lack of legislative history is not altogether surprising given that the spaceport bond provisions were themselves a bit of a surprise, making their appearance very late in the legislative process, only a few days before the bill was enacted.
The role of the JCT Blue Book in interpreting tax-exempt bond legislation
In the same way that robust legislative history for tax-exempt bond provisions is a proud tradition, so too is the use of the Joint Committee on Taxation General Explanation (or "Blue Book") of a particular piece of legislation to provide additional color. Although the Blue Book technically is not legislative history (because it is prepared by the JCT and not Congress), courts have held that Blue Books are nonetheless entitled to respect and are instructive as to the reasonableness of an agency’s interpretation of a facially ambiguous statute. In some cases, the Blue Book may even contain additional provisions or gloss beyond the committee reports and legislative text.
What the OBBBA Blue Book says about spaceport bonds and public use requirements
The JCT recently released their Blue Book for the OBBBA. The portion of the Blue Book dealing with spaceports does not add anything new, other than confirming, as expected, that the rule in Code section 142(p)(3) providing that a facility “shall not be required to be available for use by the general public to be treated as a spaceport” was indeed intended to make it so that issuers of spaceport bonds do not have to comply with the public use requirements contained in Treasury Regulations section 1.103-8. The specific sections of the Treasury Regulations that section 142(p)(3) makes inapplicable are section 1.103-8(a)(2) (providing that an exempt facility “must serve or be available on a regular basis for general public use, or be a part of a facility so used, as contrasted with similar types of facilities which are constructed for the exclusive use of a limited number of nonexempt persons in their trades or businesses”) and section 1.103-8(e)(1) (providing that airport bond facilities must be “available for use by members of the general public or for use by common carriers or charter carriers which serve members of the general public”).
Looking ahead: Awaiting further Treasury and IRS guidance on spaceport bonds
Although practitioners assumed this was the intent of Code section 142(p)(3), the language in that section speaks in general terms, so it is helpful to see the connection made explicit. In addition, with the Blue Book done, the legislative text and history of the spaceport bond provisions as enacted in the OBBBA are now effectively “closed.” For any further guidance on the meaning of the provisions from Treasury and the IRS, we will have to wait, or see if Congress makes further refinements to the statute.