The impeachment is obviously drawing a lot of media attention right now, so I read thean article about it for(to build my vocabulary)/(for building. my vocabulary.)

現在進行形なので、drawの後に"-ing”を付ける必要があります。
ここでの"article”は特定の記事の事じゃないので、"a" またこの場合は"an"を使います。

I got stuck on this sentence, which isread, "Democrats rest their case on the testimony of the witnesses who described, in the Democrats’ view, a scheme by the president to withhold vital military aid from Ukraine unless they announced an investigation of Joe Biden."On The thing that I wasgot stuck ion was that it seems something is missing after "described." If itdescribed was followed by "it as", like: " who described it, in the Democrats’ view, as a scheme", it makeswould have made sense to me.

文全体を過去形にして見ました。
このように最後の行の最初の"it"はもしかして、"described"のこと言ってたんですか？違ったらすみません。

ButHowever, I know this is a natural English expression, so I have to get used to it.

The impeachment [is] obviously draw[ing] a lot of media attention now, so I read the article about it for my vocabulary building.

"about it for my vocabulary building" は正しいが少し不自然です。...so I read the article to build my vocabulary の方がいいかもしれません。

I got stuck on this sentence, which is "Democrats rest their case on the testimony of the witnesses who described, in the Democrats’ view, a scheme by the president to withhold vital military aid from Ukraine unless they announced an investigation of Joe Biden." One thing that I was stuck is[on was] that it seems [that] something is missing after "described." If it followed by it as: " who described it, in the Democrats’ view, as a scheme", it makes sense to me.

try ignoring the "in the Democrats’ view" part. --> Democrats rest their case on the testimony of the witnesses who described a scheme (Rubyさんが書いたit はa schemeになります) by the president to withhold vital military aid

The impeachment is obviously drawing a lot of media attention now, so I read thean article about it forto build up my vocabulary building.

I got stuck on this sentence, which isreads, "Democrats rest their case on the testimony of the witnesses who described, in the Democrats’ view, a scheme by the president to withhold vital military aid from Ukraine unless they announced an investigation of Joe Biden." One thing that I wasgot stuck on is that it seems something is missing after "described." If it followed by it aswere to be written in the following manner, it would make sense to me: " who described it, in the Democrats’ view, as a scheme", it makes sense to me."

In this case, without the part offset by commas, the sentence reads "Democrats rest their case on the testimony of the witnesses who described a scheme...". In this case, "described" means "explained".

ButHowever, I know this is a natural English expression, so I have to get used to it.