You are working in HR area since 1998 which means that you have a good experience in this discipline. Now you are searching for a job in US. What I would suggest is that you please register in some good reputed job portals like Indeed, Monster, ZipRecruiter, Simply Hired, CareerBuilder etc and then find out the jobs advertised in them matching with your area of specialisation as eel as interest. By doing this exercise you would also come to know other jobs in HR area advertised by the companies hiring the HR persons. If you find that there is a particular demand in some specific area in HR but you are not having experience in that niche then it would be necessary to acquire those skills which are giving more opportunities to the professionals for getting a job abroad.
Some of the areas in HR which are interesting for making a career are - International Human Resource, Labor Relations, Training and Development, Executive Recruiter, HR Analytics Specialist, Employment Management, Compensation and Benefits etc. So, acquiring a certificate or diploma in one of these could help the job seeker.
You can do these courses from any reputed online agency like coursera, unacademy, EdX, FutureLearn, Udemy, Skillshare etc.
I hope that you are having requisite computer skills for working in a company abroad. If not then go through some short courses for improving your proficiency in basic computer skills. It would be difficult to survive in alien environment without that.
Knowledge is power.