In 2001, delegations comprised of 637 international dignitaries representing 50 countries made official visits to the California Senate. The countries, ranked by number of visitors, were as follows: | |||
| COUNTRY | # VISITORS | COUNTRY | # VISITORS |
| CHINA | 204 | SLOVENIA | 3 |
| GERMANY | 72 | SOUTH KOREA | 3 |
| JAPAN | 69 | BANGLADESH | 2 |
| INDIA | 33 | FINLAND | 2 |
| SOUTH AFRICA | 30 | FRANCE | 2 |
| SPAIN | 25 | INDONESIA | 2 |
| RUSSIA | 23 | KAZAKHSTAN | 2 |
| JORDAN | 17 | MOROCCO | 2 |
| UKRAINE | 14 | PAKISTAN | 2 |
| NIGERIA | 13 | SINGAPORE | 2 |
| UNITED KINGDOM | 12 | SRI LANKA | 2 |
| MOLDOVA | 10 | URUGUAY | 2 |
| BULGARIA | 8 | UZBEKISTAN | 2 |
| ITALY | 8 | ARGENTINA | 1 |
| PHILIPPINES | 8 | BELGIUM | 1 |
| ROMANIA | 7 | CANADA | 1 |
| PORTUGAL | 6 | DENMARK | 1 |
| YUGOSLAVIA | 6 | GREECE | 1 |
| BRAZIL | 5 | ISRAEL | 1 |
| EL SALVADOR | 5 | NORWAY | 1 |
| GUATEMALA | 5 | SWEDEN | 1 |
| MONGOLIA | 5 | TUNISIA | 1 |
| AZERBAIJAN | 4 | TURKEY | 1 |
| NEW ZEALAND | 4 | VENEZUELA | 1 |
| NICARAGUA | 4 | ZIMBABWE | 1 |
| The delegations studied a wide range of subjects, which are ranked below according to the number of visitors who studied them: | |||
| SUBJECT | # VISITORS | SUBJECT | # VISITORS |
| protocol/international relations | 410 | transportation | 47 |
| government/legislative process | 353 | budget/finance | 41 |
| international trade | 216 | media relations | 34 |
| social/health issues | 179 | judiciary | 15 |
| education | 122 | public safety | 14 |
| energy/environment | 106 | gender | 11 |
| agriculture | 91 | immigration | 9 |
| biotechnology | 70 | death penalty | 8 |
Note: As some delegations studied more than one subject, the subject area numbers will not coincide with the number of visitors.