U.S. tech giants including Amazon.com Inc., Alphabet Inc.'s Google Inc., Facebook Inc. and Microsoft Corp., as well as companies from other sectors, are working together on an open letter to U.S. President Donald Trump to express concern over his recent immigration ruling, Bloomberg News reported Feb. 2, citing people familiar with the matter.

Companies in finance, manufacturing, energy and consumer goods sectors are reportedly also involved, although it is not clear yet which companies will agree to sign the letter.

In the letter, to be published this week, the companies reportedly also offered help to fix the immigration issue, including coming up with ways to thoroughly screen immigrants as well as resolving the status of the about 750,000 undocumented immigrants brought into the U.S. under the Deferred Action for Childhood Arrivals program.

According to a draft acquired by Bloomberg, the companies, which hire thousands of employees from the U.S. and abroad, are calling for Trump to consider them as "a resource to help achieve immigration policies that both support the work of American businesses and reflect American values."

Amazon and Expedia Inc. have filed amicus briefs in support of a lawsuit by the Washington state attorney general. Amazon CEO Jeff Bezos has also expressed his opposition to Trump's travel ban and told his employees, through a memo, that the company will offer "full support" to anyone affected, Fortune reported Jan. 31.

Meanwhile, GitHub reportedly organized a meeting Jan. 31 with various tech companies to discuss the possible filing of an amicus brief, which would support a lawsuit against Trump's immigration ban on seven Muslim-majority countries.