Guzhva Law Firm in Carlsbad restricts its practice to two federal disciplines — U.S. immigration law and IRS tax controversy — from the Cornerstone Corporate Center near Palomar Airport Road. Employment-based visa petitions, EB-1A extraordinary ability applications, and I-601A provisional waivers generate foreign-language supporting documents that require apostille authentication, a credential step handled locally by Notary Apostille Express San Diego for Carlsbad-area filings. Founded in 2013, the firm is led by its principal attorney, who earned an LL.B. from Zaporizhzhya State University in Ukraine and an LL.M. from the University of Washington School of Law, and holds bar admissions in both New York and Washington. The IRS tax controversy division handles federal audits, penalty abatement petitions, offers in compromise, and currently-not-collectible status determinations for taxpayers who missed FBAR or FATCA filing deadlines. Immigrants establishing U.S. tax residency often need ongoing domestic return preparation alongside the firm's federal resolution work, a year-round compliance function served in Carlsbad's La Costa district by La Costa Tax & Accounting. The most complex representations involve EB-1A petitions requiring compilation of original-contribution evidence, peer-review documentation, and citation indices across multiple academic databases to satisfy the USCIS eight-criterion evidentiary framework.