RO submitted a proposal to repeal FATCA and to replace CBT with (since named) Territorial Taxation for Individuals to the House Ways and Means Committee, on March 22, 2016.

On April 26, 2016, Judge Thomas M. Rose dismissed the RO's FATCA lawsuit on the grounds that the plaintiffs lacked legal standing to pursue the suit.

RO Israel hosted a major rally in support of the Donald Trump 2016 presidential campaign on October 26, 2016, known as the Jerusalem Forever Event.

In March 2019, Marc Zell met with Mayor Moshe Lion for RO's formal proposal of holding its October annual international conference for GOP representatives residing in 62 countries at Jerusalem.

The United States being the only country that taxes its citizens living abroad indefinitely,[16] many Americans are now denied banking privileges throughout the world because foreign financial institutions cannot justify enduring increased compliance costs due to new regulations, and refuse to be proxy agents for the Internal Revenue Service (IRS).

A lawsuit fighting against FATCA, Crawford v. U.S. Department of Treasury, with eight counts of constitutional violations, was filed on July 14, 2015, by Republican Overseas Action (ROA), a 501(c)(4) organization of RO.

[25] The Tax Fairness for Americans Abroad Act of 2018 (TFFAAA) was introduced just prior to the closing of the 115th Congress by Congressman George Holding (R-NC).

Slated to be read in 2019 by the 116th Congress; the bi-partisan bill proposes a change from citizenship-based to residency-based taxation for nonresident citizens by amending the IRS Code of 1986.

[26] RO co-founder Yue is quoted as saying that "The TFFAAA will amend the Internal Revenue Code by offering overseas Americans a status similar to that enjoyed by corporations where foreign-sourced income is taxed in the country where it is earned.