Generally...
Visa allows a foreign national to enter the United States. A visa for a short or temporary stay in the U.S. is generally called a nonimmigrant visa. A nonimmigrant visa holder returns to his country upon completion of the purpose.
There are many types of visas based on the purpose of U.S. entry. A Visa applicant must have a purpose that aligns with a visa category. Visa is granted if the Consular officer is convinced that the stated purpose meets a visa category.
Entry into the United States is granted only when the Customs and Border Protection grant approval (CBP) officer, i.e., grant of visa is not an assurance that the foreign national will be admitted to the United States.
Parole
Parole is not a visa but special permission to enter the United States temporarily (up to a year) for a specific purpose.
It is a discretionary grant for an urgent humanitarian reason or public benefit. International entrepreneurs can now use parole to invest in and grow startup businesses, and USCIS will soon form policies for IER parole.
Temporary Protected Status (TPS)
Nationals of designated countries in the United States qualify for this lawful stay. The country designation is made by the U.S. government occasionally, and this status expires when the designation is withdrawn. Example: Liberia is no longer a TPS-designated country.
Special relief benefits may apply for extension/ change of status or expedite processing, or EAD may apply under the Coronavirus crisis.
Tourists are short-term visitors for business purposes, including conferences, business meetings, training, and business promotion.
Study in an educational institution that is recognized for accepting international students.
professionals whose position requires a bachelor's or master's diploma or higher qualification.
foreign nationals want to join a training program of any sort
business professionals employed at a related foreign company transferred to a U.S company
This is a hybrid category between immigrant and nonimmigrant visas. Unmarried foreign nationals in a relationship with a United States Citizen coming to marry the fiance`.
Still, have questions? Contact me anytime! I look forward to hearing from you.