大統領に

to become president

→ 大統領
phrase Uncommon #11,021
to become president With なる, に marks the position or status someone becomes. は can follow に for emphasis or contrast, as in 大統領には.
JA: いつか大統領になりたい。
EN: I want to become president someday.

誰が合衆国大統領に選ばれると思いますか

Who do you think will be elected president of the United States?

大統領にそれらの問題を処理する能力がある

The president has the ability to handle those problems.

大統領に直接会える人はごくわずか

Very few people get to meet the president in person.

大統領に重大な責任がある

The president bears a grave responsibility.

彼は再び大統領に選ばれると思いますか

Do you think he will be elected president again?

大統領に彼が適任だ

He is the right person for president.

大統領に電話を

Call the president.

— ア・フュー・グッドメン (1992)

トム共和国大統領に選出されました

Tom was elected president of the republic.

私は大統領に立候補するのを諦めた

I gave up on running for president.

大統領に会うなんて本当にわくわくした

Meeting the president was really exciting.