Apparently for tech leaders in the Silicon Valley, there is always a shortage of skilled professionals and that’s why most of them request H-1B visas for foreign workforce. But a recent study conducted by Bright.com, a California-based company suggests that for the top 10 jobs where H-1B visas are requested, only three do not currently have enough qualified American jobseekers to satisfy demand.

This means that there should not be as much need for requesting H-1B visas as most vacancies can be filled through local candidates.

“The main conclusion that we need more foreign tech workers is not true. We need to be more targeted in our use of this program,” says David Hardtke, Bright’s chief scientist.

To conduct the study, Bright looked at H-1B applications and rewrote company’s job descriptions to make them more generic. With its proprietary Bright Score, which takes into account education and fit as well as proximity to the job, it compared the job descriptions with 1 million active U.S.-based jobseekers over 45 days.

The study revealed the position of computer systems analyst as the most noted position when applying for an H-1B. Though Bright also confirmed that this position has few qualified American candidates. For higher paying jobs, like computer programmer, software developer, and electronics engineer, Bright found more than one domestic job candidate for every H-1B application. And for financial analysts, Bright.com found 12 local candidates for every visa application.

Another interesting fact from Bright’s study is that the average salary for H-1B workers was higher than the median in each field. This means that these foreign workers are quite valuable to the employers, and the competition is so fierce that companies are offering them higher wages than American candidates.

But if we take a look at the other side of the results, companies are actually taking benefit out of H-1B program as it helps them fill top positions via lower-paid positions, which can be done by publicly posting openings for lower-wage jobs and filling them with extremely skilled programmers who are eager to work in the U.S. Surprisingly, these are not the tech firms taking advantage, but are outsourcing firms that hire foreign workers and loan them to other companies.

So, the policymakers might need to have a probe the need for foreign technology workers and the intentions of those looking to hire them. Examining job requirements and job titles, the actual roles, and the actual salaries of H-1B workers may help.