Has the Open Source Initiative otherwise tried to find a solution such that software works of the United States government would have a clean path to be compatible with Open Source?
CC0 may be better if you are looking for international agreement, though it seems like the patent related clause resulted in the review by opensource.org to be abandoned.
"CC0 was not explicitly rejected, but the License Review Committee was unable to reach consensus that it should be approved, and Creative Commons eventually withdrew the application. The most serious of the concerns raised had to do with the effects of clause 4(a), which reads: "No ... patent rights held by Affirmer are waived, abandoned, surrendered, licensed or otherwise affected by this document.". While many open source licenses simply do not mention patents, it is exceedingly rare for open source licenses to explicitly disclaim any conveyance of patent rights, and the Committee felt that approving such a license would set a dangerous precedent, and possibly even weaken patent infringement defenses available to users of software released under CC0."
https://opensource.org/faq#cc-zero
Has the Open Source Initiative otherwise tried to find a solution such that software works of the United States government would have a clean path to be compatible with Open Source?
CC0 may be better if you are looking for international agreement, though it seems like the patent related clause resulted in the review by opensource.org to be abandoned.
"CC0 was not explicitly rejected, but the License Review Committee was unable to reach consensus that it should be approved, and Creative Commons eventually withdrew the application. The most serious of the concerns raised had to do with the effects of clause 4(a), which reads: "No ... patent rights held by Affirmer are waived, abandoned, surrendered, licensed or otherwise affected by this document.". While many open source licenses simply do not mention patents, it is exceedingly rare for open source licenses to explicitly disclaim any conveyance of patent rights, and the Committee felt that approving such a license would set a dangerous precedent, and possibly even weaken patent infringement defenses available to users of software released under CC0." https://opensource.org/faq#cc-zero