make a federal case of

make a federal case (out) of sth AND make a big deal of sth (give undue importance to an issue) -- поднимать шум (из-за ерунды); раздувать

see also
[make a mountain out of a molehill]
[blow out of proportion]

a storm in a teacup

[tempest in a teacup]
[song and dance ]
[make a meal (out) of sth]

make something out of nothing