<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def search_for_tweets_about(user_id, params):
 """ Search twitter API """

    url = "https://api.twitter.com/1.1/search/tweets.json"
    response = make_twitter_request(url, user_id, params)
    return process_tweets(response.json()["statuses"])