Nice try, but the correct answer is…
1968 – present
In the first major wave of US immigration between 1840 and 1860, people came on sailing ships on a voyage that lasted several weeks. They were mainly from northern and central Europe, including from the UK, Ireland, and Germany.
The second wave of immigration came between 1890 and 1915 and again consisted of people from Europe, including southern and eastern Europe. These immigrants came on steamships on a voyage that took about one week, until a German U-boat sank the British passenger ship Lusitania. That triggered the US entering World War I and led to an abrupt end of the second wave of US immigration.
The third major wave from 1968 onward is a result of the 1965 Immigration and Nationality Act, bipartisan legislation that went into effect in 1968. Over the next 50 years, the percent of immigrants went from less than 5% to nearly 14%.

For the first time, large numbers of immigrants came from Asia and Latin America, as well as from Russia, former Soviet nations, and the Middle East.
The result was slow at first, with the US bottoming out in its percent of immigrants in 1970 at below 5%. But beginning in the early 1970s and onward, millions of new immigrants came to the US, mostly in airliners.
Correct!
1968 – present
In the first major wave of US immigration between 1840 and 1860, people came on sailing ships on a voyage that lasted several weeks. They were mainly from northern and central Europe, including from the UK, Ireland, and Germany.
The second wave of immigration came between 1890 and 1915 and again consisted of people from Europe, including southern and eastern Europe. These immigrants came on steamships on a voyage that took about one week, until a German U-boat sank the British passenger ship Lusitania. That triggered the US entering World War I and led to an abrupt end of the second wave of US immigration.
The third major wave from 1968 onward is a result of the 1965 Immigration and Nationality Act, bipartisan legislation that went into effect in 1968. Over the next 50 years, the percent of immigrants went from less than 5% to nearly 14%.

For the first time, large numbers of immigrants came from Asia and Latin America, as well as from Russia, former Soviet nations, and the Middle East.
The result was slow at first, with the US bottoming out in its percent of immigrants in 1970 at below 5%. But beginning in the early 1970s and onward, millions of new immigrants came to the US, mostly in airliners.