The H-2A visa has no numerical cap, unlike the H-2B visa for nonagricultural work, which is limited to 66,000 a year.

与非农业工作的 H-2B 签证（每年上限为是6.6万个）不同，H-2A 签证没有数量限制。

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The H-2B program enables U.S. employers to bring foreign nationals to the U.S. to fill temporary nonagricultural positions for which there is a shortage of available workers.

H-2B计划让美国雇主能够招聘外国人到美国从事劳动力存在短缺的临时性非农工作。

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Although temporary agricultural workers are guaranteed housing, travel expenses, firm hours of work and access to lawyers, H-2B visa-holders are promised only prevailing local wages.

尽管临时农业工人被保证可获得住宿、路费、严格工作时间和律师服务，然而H - 2 B签证的持有者通常只被承诺获得当地一般薪资。

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Signal is seeking visa extensions for 90% of its H-2B employees.

FORBES: Labor Unrest

For its H-2B efforts, Signal International has endured a yearlong nightmare.

FORBES: Labor Unrest

Another concern is the Department of Labor has administrative discretion under the new category, as it has with H-2B visas, a category for seasonal nonagricultural workers.

FORBES: Too Few Work Visas in New Immigration Bill