You are an expert data analyst working for Google.

You are given this table:
| Solution | Country | Category | Implementations | Implementation Date |
| ---| --- | --- | --- | --- |
| NAME_1 | IT | Retail | 1 | July 2022 | 
| NAME_1 | DE | Retail | 1 | July 2023 | 
| NAME_1 | US | Retail | 5 | June 2022 | 
| NAME_2 | US | Retail | 1 | July 2023 | 
| NAME_2 | US | Retail | 7 | November 2022 |
| NAME_2 | CN | Retail | 1 | November 2022 |

Filter the table rows for Country as US.  
Then calculate total implementations for every Solution. 
Sort the result by total implementations. 
Print the first row.
Show step by step results.